{
  "title": "Perimeter of Rectilinear Figures (Mensuration) - Grade 6 CBSE",
  "total_questions": 150,
  "questions": [
    {"id": 1, "difficulty": "easy", "question": "What is perimeter?", "options": {"A": "Area inside shape", "B": "Distance around shape", "C": "Length of one side", "D": "Height of shape"}, "correct_answer": "B"},
    {"id": 2, "difficulty": "easy", "question": "Perimeter of rectangle: length 5 cm, width 3 cm", "options": {"A": "8 cm", "B": "15 cm", "C": "16 cm", "D": "30 cm"}, "correct_answer": "C"},
    {"id": 3, "difficulty": "easy", "question": "Square with side 4 cm has perimeter:", "options": {"A": "8 cm", "B": "12 cm", "C": "16 cm", "D": "20 cm"}, "correct_answer": "C"},
    {"id": 4, "difficulty": "easy", "question": "Rectangle: 7 m long, 2 m wide. Perimeter?", "options": {"A": "9 m", "B": "14 m", "C": "18 m", "D": "28 m"}, "correct_answer": "C"},
    {"id": 5, "difficulty": "easy", "question": "Square side = 6 cm. Perimeter = ?", "options": {"A": "12 cm", "B": "18 cm", "C": "24 cm", "D": "36 cm"}, "correct_answer": "C"},
    {"id": 6, "difficulty": "easy", "question": "Perimeter of 8 cm × 5 cm rectangle:", "options": {"A": "13 cm", "B": "26 cm", "C": "40 cm", "D": "80 cm"}, "correct_answer": "B"},
    {"id": 7, "difficulty": "easy", "question": "Square with side 9 m has perimeter:", "options": {"A": "18 m", "B": "27 m", "C": "36 m", "D": "81 m"}, "correct_answer": "C"},
    {"id": 8, "difficulty": "easy", "question": "Rectangle: 12 cm by 8 cm. Perimeter?", "options": {"A": "20 cm", "B": "40 cm", "C": "48 cm", "D": "96 cm"}, "correct_answer": "B"},
    {"id": 9, "difficulty": "easy", "question": "Square side = 11 cm. Perimeter = ?", "options": {"A": "22 cm", "B": "33 cm", "C": "44 cm", "D": "121 cm"}, "correct_answer": "C"},
    {"id": 10, "difficulty": "easy", "question": "Perimeter of 15 m × 10 m rectangle:", "options": {"A": "25 m", "B": "50 m", "C": "150 m", "D": "300 m"}, "correct_answer": "B"},
    {"id": 11, "difficulty": "easy", "question": "Square with side 14 cm. Perimeter?", "options": {"A": "28 cm", "B": "42 cm", "C": "56 cm", "D": "196 cm"}, "correct_answer": "C"},
    {"id": 12, "difficulty": "easy", "question": "Rectangle: 20 m long, 5 m wide. Perimeter?", "options": {"A": "25 m", "B": "50 m", "C": "100 m", "D": "200 m"}, "correct_answer": "B"},
    {"id": 13, "difficulty": "easy", "question": "Square side = 18 cm. Perimeter = ?", "options": {"A": "36 cm", "B": "54 cm", "C": "72 cm", "D": "324 cm"}, "correct_answer": "C"},
    {"id": 14, "difficulty": "easy", "question": "Perimeter of 25 cm × 4 cm rectangle:", "options": {"A": "29 cm", "B": "58 cm", "C": "100 cm", "D": "200 cm"}, "correct_answer": "B"},
    {"id": 15, "difficulty": "easy", "question": "Square with side 22 m. Perimeter?", "options": {"A": "44 m", "B": "66 m", "C": "88 m", "D": "484 m"}, "correct_answer": "C"},
    {"id": 16, "difficulty": "easy", "question": "Rectangle: 30 cm by 6 cm. Perimeter?", "options": {"A": "36 cm", "B": "72 cm", "C": "180 cm", "D": "360 cm"}, "correct_answer": "B"},
    {"id": 17, "difficulty": "easy", "question": "Square side = 16 cm. Perimeter = ?", "options": {"A": "32 cm", "B": "48 cm", "C": "64 cm", "D": "256 cm"}, "correct_answer": "C"},
    {"id": 18, "difficulty": "easy", "question": "Perimeter of 9 m × 7 m rectangle:", "options": {"A": "16 m", "B": "32 m", "C": "63 m", "D": "126 m"}, "correct_answer": "B"},
    {"id": 19, "difficulty": "easy", "question": "Square with side 13 cm. Perimeter?", "options": {"A": "26 cm", "B": "39 cm", "C": "52 cm", "D": "169 cm"}, "correct_answer": "C"},
    {"id": 20, "difficulty": "easy", "question": "Rectangle: 24 m by 3 m. Perimeter?", "options": {"A": "27 m", "B": "54 m", "C": "72 m", "D": "144 m"}, "correct_answer": "B"},
    {"id": 21, "difficulty": "medium", "question": "Find perimeter: L-shaped figure with sides 4 cm, 3 cm, 2 cm, 5 cm, 6 cm, 4 cm", "options": {"A": "20 cm", "B": "22 cm", "C": "24 cm", "D": "26 cm"}, "correct_answer": "C"},
    {"id": 22, "difficulty": "medium", "question": "T-shaped figure: sides 5, 3, 2, 4, 6, 3, 5 cm. Perimeter?", "options": {"A": "28 cm", "B": "30 cm", "C": "32 cm", "D": "34 cm"}, "correct_answer": "A"},
    {"id": 23, "difficulty": "medium", "question": "U-shaped figure: dimensions 8×4 with 2×2 cutout. Perimeter?", "options": {"A": "24 units", "B": "28 units", "C": "32 units", "D": "36 units"}, "correct_answer": "B"},
    {"id": 24, "difficulty": "medium", "question": "Figure like stairs: sides 3, 2, 3, 2, 3, 2, 3, 2 cm. Perimeter?", "options": {"A": "20 cm", "B": "22 cm", "C": "24 cm", "D": "26 cm"}, "correct_answer": "A"},
    {"id": 25, "difficulty": "medium", "question": "Cross shape: arms 5×1, center 1×1. Perimeter?", "options": {"A": "20 units", "B": "22 units", "C": "24 units", "D": "26 units"}, "correct_answer": "C"},
    {"id": 26, "difficulty": "medium", "question": "H-shaped figure: each vertical 6, horizontal 4, thickness 1. Perimeter?", "options": {"A": "28 units", "B": "32 units", "C": "36 units", "D": "40 units"}, "correct_answer": "B"},
    {"id": 27, "difficulty": "medium", "question": "Figure: outer rectangle 10×6, inner rectangle 8×4 removed. Perimeter of frame?", "options": {"A": "32 units", "B": "40 units", "C": "48 units", "D": "56 units"}, "correct_answer": "C"},
    {"id": 28, "difficulty": "medium", "question": "E-shaped: height 8, width 6, each arm 2 thick. Perimeter?", "options": {"A": "40 units", "B": "44 units", "C": "48 units", "D": "52 units"}, "correct_answer": "B"},
    {"id": 29, "difficulty": "medium", "question": "Plus sign: each arm 5 long, 1 wide. Perimeter?", "options": {"A": "40 units", "B": "42 units", "C": "44 units", "D": "46 units"}, "correct_answer": "A"},
    {"id": 30, "difficulty": "medium", "question": "C-shaped: outer 8×6, inner 6×4 opening. Perimeter?", "options": {"A": "36 units", "B": "40 units", "C": "44 units", "D": "48 units"}, "correct_answer": "B"},
    {"id": 31, "difficulty": "medium", "question": "Figure: 3 squares each side 2 cm in a row. Perimeter?", "options": {"A": "12 cm", "B": "16 cm", "C": "20 cm", "D": "24 cm"}, "correct_answer": "B"},
    {"id": 32, "difficulty": "medium", "question": "4 squares in L formation, each side 3 cm. Perimeter?", "options": {"A": "24 cm", "B": "30 cm", "C": "36 cm", "D": "42 cm"}, "correct_answer": "B"},
    {"id": 33, "difficulty": "medium", "question": "Figure made of 5 squares: plus shape, each square side 1 cm. Perimeter?", "options": {"A": "12 cm", "B": "14 cm", "C": "16 cm", "D": "18 cm"}, "correct_answer": "A"},
    {"id": 34, "difficulty": "medium", "question": "2 rectangles: 4×3 and 3×2 attached. Perimeter of combined figure?", "options": {"A": "22 units", "B": "24 units", "C": "26 units", "D": "28 units"}, "correct_answer": "B"},
    {"id": 35, "difficulty": "medium", "question": "T-shape: stem 6×2, top 8×2. Perimeter?", "options": {"A": "36 units", "B": "40 units", "C": "44 units", "D": "48 units"}, "correct_answer": "B"},
    {"id": 36, "difficulty": "medium", "question": "Figure: staircase of 4 steps, each step 2×2. Perimeter?", "options": {"A": "24 units", "B": "28 units", "C": "32 units", "D": "36 units"}, "correct_answer": "C"},
    {"id": 37, "difficulty": "medium", "question": "U-shape: outer 10×8, inner 8×6 opening. Perimeter?", "options": {"A": "44 units", "B": "48 units", "C": "52 units", "D": "56 units"}, "correct_answer": "C"},
    {"id": 38, "difficulty": "medium", "question": "Cross shape: vertical arm 7×1, horizontal 5×1. Perimeter?", "options": {"A": "32 units", "B": "36 units", "C": "40 units", "D": "44 units"}, "correct_answer": "C"},
    {"id": 39, "difficulty": "medium", "question": "Figure: 2×3 rectangle with 1×1 square missing from corner. Perimeter?", "options": {"A": "10 units", "B": "12 units", "C": "14 units", "D": "16 units"}, "correct_answer": "B"},
    {"id": 40, "difficulty": "medium", "question": "H-shape: each vertical 8×2, horizontal 4×2. Perimeter?", "options": {"A": "48 units", "B": "52 units", "C": "56 units", "D": "60 units"}, "correct_answer": "C"},
    {"id": 41, "difficulty": "medium", "question": "Perimeter of figure with sides: 4.5, 3.2, 5.1, 2.8, 4.7 cm", "options": {"A": "18.3 cm", "B": "19.3 cm", "C": "20.3 cm", "D": "21.3 cm"}, "correct_answer": "C"},
    {"id": 42, "difficulty": "medium", "question": "Sides: 6.8, 4.3, 5.2, 3.7, 7.1 m. Perimeter?", "options": {"A": "26.1 m", "B": "27.1 m", "C": "28.1 m", "D": "29.1 m"}, "correct_answer": "B"},
    {"id": 43, "difficulty": "medium", "question": "Figure perimeter: 12.5, 8.4, 6.3, 9.2, 7.8 cm", "options": {"A": "43.2 cm", "B": "44.2 cm", "C": "45.2 cm", "D": "46.2 cm"}, "correct_answer": "B"},
    {"id": 44, "difficulty": "medium", "question": "Sides: 15.6, 9.8, 12.4, 8.7, 11.3 m. Total perimeter?", "options": {"A": "56.8 m", "B": "57.8 m", "C": "58.8 m", "D": "59.8 m"}, "correct_answer": "B"},
    {"id": 45, "difficulty": "medium", "question": "Perimeter: 3.25, 4.75, 2.50, 5.25, 3.75 cm", "options": {"A": "19.50 cm", "B": "20.50 cm", "C": "21.50 cm", "D": "22.50 cm"}, "correct_answer": "A"},
    {"id": 46, "difficulty": "medium", "question": "Sides: 7.8, 5.4, 6.9, 4.7, 8.3, 3.6 m", "options": {"A": "36.7 m", "B": "37.7 m", "C": "38.7 m", "D": "39.7 m"}, "correct_answer": "A"},
    {"id": 47, "difficulty": "medium", "question": "Figure perimeter: 9.25, 6.50, 8.75, 5.25, 7.80 cm", "options": {"A": "37.55 cm", "B": "38.55 cm", "C": "39.55 cm", "D": "40.55 cm"}, "correct_answer": "A"},
    {"id": 48, "difficulty": "medium", "question": "Sides: 11.2, 8.9, 10.5, 7.8, 9.6, 6.7 m", "options": {"A": "54.7 m", "B": "55.7 m", "C": "56.7 m", "D": "57.7 m"}, "correct_answer": "A"},
    {"id": 49, "difficulty": "medium", "question": "Perimeter: 4.85, 3.92, 5.67, 2.78, 6.43 cm", "options": {"A": "23.65 cm", "B": "24.65 cm", "C": "25.65 cm", "D": "26.65 cm"}, "correct_answer": "A"},
    {"id": 50, "difficulty": "medium", "question": "Sides: 14.3, 9.7, 12.8, 8.5, 11.9, 7.6 m", "options": {"A": "64.8 m", "B": "65.8 m", "C": "66.8 m", "D": "67.8 m"}, "correct_answer": "A"},
    {"id": 51, "difficulty": "medium", "question": "Figure: rectangle 8.5 m × 4.2 m with 1.5 m × 1.5 m square cut from corner. Perimeter?", "options": {"A": "25.4 m", "B": "26.4 m", "C": "27.4 m", "D": "28.4 m"}, "correct_answer": "A"},
    {"id": 52, "difficulty": "medium", "question": "L-shape: sides 6.3 cm, 4.8 cm, 3.5 cm, 2.7 cm, 5.2 cm, 4.1 cm", "options": {"A": "26.6 cm", "B": "27.6 cm", "C": "28.6 cm", "D": "29.6 cm"}, "correct_answer": "A"},
    {"id": 53, "difficulty": "medium", "question": "T-shape: dimensions given in decimals. Total perimeter 34.8 cm. One side missing: 4.2, 3.7, 5.9, 6.4, 4.8, ?", "options": {"A": "5.8 cm", "B": "6.8 cm", "C": "7.8 cm", "D": "8.8 cm"}, "correct_answer": "A"},
    {"id": 54, "difficulty": "medium", "question": "U-shape: outer 9.6×7.2, inner 7.6×5.2. Perimeter?", "options": {"A": "41.6 units", "B": "42.6 units", "C": "43.6 units", "D": "44.6 units"}, "correct_answer": "A"},
    {"id": 55, "difficulty": "medium", "question": "Staircase of 3 steps: each 2.5×2.5. Perimeter?", "options": {"A": "25 units", "B": "27.5 units", "C": "30 units", "D": "32.5 units"}, "correct_answer": "C"},
    {"id": 56, "difficulty": "medium", "question": "Cross shape: each arm 4.5×1.5. Perimeter?", "options": {"A": "39 units", "B": "42 units", "C": "45 units", "D": "48 units"}, "correct_answer": "B"},
    {"id": 57, "difficulty": "medium", "question": "H-shape: verticals 7.2×2.4, horizontal 4.8×2.4. Perimeter?", "options": {"A": "48 units", "B": "50.4 units", "C": "52.8 units", "D": "55.2 units"}, "correct_answer": "C"},
    {"id": 58, "difficulty": "medium", "question": "Figure: 3 squares in row, each side 2.8 cm. Perimeter?", "options": {"A": "16.8 cm", "B": "22.4 cm", "C": "28 cm", "D": "33.6 cm"}, "correct_answer": "B"},
    {"id": 59, "difficulty": "medium", "question": "E-shape: height 9.6, width 7.2, arms 2.4 thick. Perimeter?", "options": {"A": "48 units", "B": "52.8 units", "C": "57.6 units", "D": "62.4 units"}, "correct_answer": "B"},
    {"id": 60, "difficulty": "medium", "question": "C-shape: outer 10.8×8.4, inner 8.8×6.4. Perimeter?", "options": {"A": "48.8 units", "B": "50.8 units", "C": "52.8 units", "D": "54.8 units"}, "correct_answer": "A"},
    {"id": 61, "difficulty": "medium", "question": "What is perimeter if all sides measured in mm: 45, 68, 32, 57, 43 mm?", "options": {"A": "2.45 cm", "B": "24.5 cm", "C": "245 cm", "D": "2450 cm"}, "correct_answer": "B"},
    {"id": 62, "difficulty": "medium", "question": "Sides in cm: 0.35 m, 280 mm, 4.2 dm, 0.05 dam. Total in meters?", "options": {"A": "1.25 m", "B": "2.25 m", "C": "3.25 m", "D": "4.25 m"}, "correct_answer": "A"},
    {"id": 63, "difficulty": "medium", "question": "Figure: sides 250 cm, 1.8 m, 3200 mm, 0.004 km. Perimeter in meters?", "options": {"A": "10.3 m", "B": "11.3 m", "C": "12.3 m", "D": "13.3 m"}, "correct_answer": "B"},
    {"id": 64, "difficulty": "medium", "question": "Mixed units: 45 cm, 0.6 m, 850 mm, 0.009 km. Total in cm?", "options": {"A": "1045 cm", "B": "1145 cm", "C": "1245 cm", "D": "1345 cm"}, "correct_answer": "A"},
    {"id": 65, "difficulty": "medium", "question": "Perimeter: 2.5 dm, 0.3 m, 450 mm, 0.06 dam. Answer in meters.", "options": {"A": "4.6 m", "B": "5.6 m", "C": "6.6 m", "D": "7.6 m"}, "correct_answer": "B"},
    {"id": 66, "difficulty": "medium", "question": "Figure sides: 120 cm, 1.8 m, 2500 mm, 0.003 km. Perimeter in cm?", "options": {"A": "640 cm", "B": "740 cm", "C": "840 cm", "D": "940 cm"}, "correct_answer": "C"},
    {"id": 67, "difficulty": "medium", "question": "Mixed: 0.35 m, 42 cm, 580 mm, 0.0045 km. Total in meters?", "options": {"A": "5.25 m", "B": "6.25 m", "C": "7.25 m", "D": "8.25 m"}, "correct_answer": "A"},
    {"id": 68, "difficulty": "medium", "question": "Sides: 65 cm, 0.85 m, 920 mm, 0.0052 km. Perimeter in dm?", "options": {"A": "242 dm", "B": "252 dm", "C": "262 dm", "D": "272 dm"}, "correct_answer": "B"},
    {"id": 69, "difficulty": "medium", "question": "Figure: 0.28 m, 310 mm, 4.5 dm, 0.0061 km. Total in cm?", "options": {"A": "1020 cm", "B": "1120 cm", "C": "1220 cm", "D": "1320 cm"}, "correct_answer": "A"},
    {"id": 70, "difficulty": "medium", "question": "Perimeter with mixed units: 0.42 m, 53 cm, 670 mm, 0.0073 km. Answer in meters.", "options": {"A": "8.52 m", "B": "9.52 m", "C": "10.52 m", "D": "11.52 m"}, "correct_answer": "A"},
    {"id": 71, "difficulty": "medium", "question": "Find missing side: Perimeter = 48 cm, sides: 8, 12, 6, 5, ?", "options": {"A": "9 cm", "B": "10 cm", "C": "11 cm", "D": "12 cm"}, "correct_answer": "C"},
    {"id": 72, "difficulty": "medium", "question": "Perimeter = 65 m, sides: 15, 18, 12, 8, ?", "options": {"A": "10 m", "B": "11 m", "C": "12 m", "D": "13 m"}, "correct_answer": "C"},
    {"id": 73, "difficulty": "medium", "question": "Missing side: Total perimeter 84 cm, sides: 21, 16, 19, 14, 8, ?", "options": {"A": "4 cm", "B": "5 cm", "C": "6 cm", "D": "7 cm"}, "correct_answer": "C"},
    {"id": 74, "difficulty": "medium", "question": "Figure perimeter = 72 m, sides: 24, 15, 18, 7, ?", "options": {"A": "6 m", "B": "7 m", "C": "8 m", "D": "9 m"}, "correct_answer": "C"},
    {"id": 75, "difficulty": "medium", "question": "Perimeter = 95 cm, sides: 28, 22, 19, 16, 5, ?", "options": {"A": "3 cm", "B": "4 cm", "C": "5 cm", "D": "6 cm"}, "correct_answer": "C"},
    {"id": 76, "difficulty": "medium", "question": "Missing side: Total 108 m, sides: 32, 25, 28, 15, 4, ?", "options": {"A": "2 m", "B": "3 m", "C": "4 m", "D": "5 m"}, "correct_answer": "C"},
    {"id": 77, "difficulty": "medium", "question": "Perimeter = 126 cm, sides: 42, 31, 28, 19, 6, ?", "options": {"A": "0 cm", "B": "1 cm", "C": "2 cm", "D": "3 cm"}, "correct_answer": "A"},
    {"id": 78, "difficulty": "medium", "question": "Figure perimeter = 144 m, sides: 48, 36, 32, 22, 8, ?", "options": {"A": "-2 m", "B": "-1 m", "C": "0 m", "D": "1 m"}, "correct_answer": "A"},
    {"id": 79, "difficulty": "medium", "question": "Perimeter = 85.6 cm, sides: 24.8, 18.5, 22.3, 12.7, ?", "options": {"A": "6.3 cm", "B": "7.3 cm", "C": "8.3 cm", "D": "9.3 cm"}, "correct_answer": "B"},
    {"id": 80, "difficulty": "medium", "question": "Total perimeter = 123.4 m, sides: 35.2, 28.6, 31.8, 19.5, 8.3, ?", "options": {"A": "0 m", "B": "0.1 m", "C": "0.2 m", "D": "0.3 m"}, "correct_answer": "A"},
    {"id": 81, "difficulty": "hard", "question": "L-shape made from 2 rectangles: 8×4 and 4×3 attached. Find perimeter.", "options": {"A": "30 units", "B": "32 units", "C": "34 units", "D": "36 units"}, "correct_answer": "C"},
    {"id": 82, "difficulty": "hard", "question": "Figure: 3×3 square with 1×1 square removed from each corner. Perimeter?", "options": {"A": "12 units", "B": "16 units", "C": "20 units", "D": "24 units"}, "correct_answer": "C"},
    {"id": 83, "difficulty": "hard", "question": "Cross shape: central square 2×2, arms 4×1 each. Perimeter?", "options": {"A": "28 units", "B": "32 units", "C": "36 units", "D": "40 units"}, "correct_answer": "B"},
    {"id": 84, "difficulty": "hard", "question": "Staircase of 5 steps: each step 3×3. Perimeter?", "options": {"A": "48 units", "B": "54 units", "C": "60 units", "D": "66 units"}, "correct_answer": "C"},
    {"id": 85, "difficulty": "hard", "question": "Frame: outer rectangle 12×8, inner rectangle 10×6. Perimeter of frame?", "options": {"A": "40 units", "B": "44 units", "C": "48 units", "D": "52 units"}, "correct_answer": "B"},
    {"id": 86, "difficulty": "hard", "question": "H-shape: each vertical 10×3, horizontal 6×3. Perimeter?", "options": {"A": "68 units", "B": "72 units", "C": "76 units", "D": "80 units"}, "correct_answer": "C"},
    {"id": 87, "difficulty": "hard", "question": "Figure: plus sign made of 5 squares each side 2. Perimeter?", "options": {"A": "40 units", "B": "44 units", "C": "48 units", "D": "52 units"}, "correct_answer": "A"},
    {"id": 88, "difficulty": "hard", "question": "U-shape: outer dimensions 15×10, thickness 2. Perimeter?", "options": {"A": "54 units", "B": "58 units", "C": "62 units", "D": "66 units"}, "correct_answer": "B"},
    {"id": 89, "difficulty": "hard", "question": "E-shape: height 12, width 9, each arm 3 thick. Perimeter?", "options": {"A": "60 units", "B": "66 units", "C": "72 units", "D": "78 units"}, "correct_answer": "B"},
    {"id": 90, "difficulty": "hard", "question": "T-shape: stem 8×3, top 10×3. Perimeter?", "options": {"A": "52 units", "B": "56 units", "C": "60 units", "D": "64 units"}, "correct_answer": "B"},
    {"id": 91, "difficulty": "hard", "question": "Figure: rectangle 10×6 with semicircle of diameter 6 removed from one side. Perimeter? (π≈3.14)", "options": {"A": "32+3π", "B": "32+6π", "C": "38+3π", "D": "38+6π"}, "correct_answer": "C"},
    {"id": 92, "difficulty": "hard", "question": "Shape: square 8×8 with quarter circle radius 8 removed from one corner. Perimeter? (π≈3.14)", "options": {"A": "32+4π", "B": "32+8π", "C": "40+4π", "D": "40+8π"}, "correct_answer": "A"},
    {"id": 93, "difficulty": "hard", "question": "Figure: equilateral triangle side 12 with square side 12 attached. Perimeter?", "options": {"A": "48 units", "B": "60 units", "C": "72 units", "D": "84 units"}, "correct_answer": "B"},
    {"id": 94, "difficulty": "hard", "question": "Shape: semicircle on top of rectangle 14×7. Perimeter? (π≈3.14)", "options": {"A": "35+7π", "B": "42+7π", "C": "35+14π", "D": "42+14π"}, "correct_answer": "A"},
    {"id": 95, "difficulty": "hard", "question": "Figure: right triangle legs 6 and 8 with rectangle 10×4 attached. Perimeter?", "options": {"A": "42 units", "B": "44 units", "C": "46 units", "D": "48 units"}, "correct_answer": "B"},
    {"id": 96, "difficulty": "hard", "question": "Shape: quarter circle radius 10 with square 10×10. Perimeter? (π≈3.14)", "options": {"A": "40+5π", "B": "40+10π", "C": "50+5π", "D": "50+10π"}, "correct_answer": "C"},
    {"id": 97, "difficulty": "hard", "question": "Figure: regular hexagon side 6 with rectangle 12×6 attached. Perimeter?", "options": {"A": "60 units", "B": "66 units", "C": "72 units", "D": "78 units"}, "correct_answer": "B"},
    {"id": 98, "difficulty": "hard", "question": "Shape: circle radius 7 with square 14×14. Perimeter? (π≈3.14)", "options": {"A": "56+14π", "B": "56+28π", "C": "70+14π", "D": "70+28π"}, "correct_answer": "A"},
    {"id": 99, "difficulty": "hard", "question": "Figure: parallelogram base 12, side 8, height 6 with triangle base 12, height 6 attached. Perimeter?", "options": {"A": "52 units", "B": "56 units", "C": "60 units", "D": "64 units"}, "correct_answer": "B"},
    {"id": 100, "difficulty": "hard", "question": "Shape: trapezoid parallel sides 10 and 6, non-parallel sides 5 each, with rectangle 10×4 attached. Perimeter?", "options": {"A": "50 units", "B": "54 units", "C": "58 units", "D": "62 units"}, "correct_answer": "B"}
  ,
{"id":101,"difficulty":"easy","question":"What does perimeter measure?","options":{"A":"Space inside a figure","B":"Total length of the boundary","C":"Diagonal of a shape","D":"Area of the shape"},"correct_answer":"B"},
  {"id":102,"difficulty":"easy","question":"Find the perimeter of a rectangle with length 6 cm and width 4 cm.","options":{"A":"10 cm","B":"20 cm","C":"24 cm","D":"12 cm"},"correct_answer":"B"},
  {"id":103,"difficulty":"easy","question":"A square has side 5 m. What is its perimeter?","options":{"A":"15 m","B":"20 m","C":"25 m","D":"30 m"},"correct_answer":"B"},
  {"id":104,"difficulty":"easy","question":"Perimeter of a rectangle is 30 cm. If length is 10 cm, what is the width?","options":{"A":"3 cm","B":"4 cm","C":"5 cm","D":"10 cm"},"correct_answer":"C"},
  {"id":105,"difficulty":"easy","question":"Which formula is used for the perimeter of a square?","options":{"A":"l × b","B":"2(l + b)","C":"4 × side","D":"side²"},"correct_answer":"C"},
  {"id":106,"difficulty":"easy","question":"Find the perimeter of a rectangle 9 m long and 1 m wide.","options":{"A":"10 m","B":"18 m","C":"20 m","D":"22 m"},"correct_answer":"D"},
  {"id":107,"difficulty":"easy","question":"A square has perimeter 28 cm. What is the length of one side?","options":{"A":"6 cm","B":"7 cm","C":"8 cm","D":"9 cm"},"correct_answer":"B"},
  {"id":108,"difficulty":"easy","question":"If all sides of a figure are added, what do we get?","options":{"A":"Area","B":"Volume","C":"Perimeter","D":"Height"},"correct_answer":"C"},
  {"id":109,"difficulty":"easy","question":"Find the perimeter of a rectangle with sides 12 cm and 3 cm.","options":{"A":"15 cm","B":"24 cm","C":"30 cm","D":"36 cm"},"correct_answer":"C"},
  {"id":110,"difficulty":"easy","question":"A square playground has side 18 m. Find its perimeter.","options":{"A":"36 m","B":"54 m","C":"72 m","D":"324 m"},"correct_answer":"C"},

  {"id":111,"difficulty":"medium","question":"Find the perimeter of an L-shaped figure with sides 4 cm, 6 cm, 2 cm, 3 cm, 6 cm, 5 cm.","options":{"A":"22 cm","B":"24 cm","C":"26 cm","D":"28 cm"},"correct_answer":"C"},
  {"id":112,"difficulty":"medium","question":"Three squares of side 3 cm are placed in a row. What is the perimeter of the figure?","options":{"A":"18 cm","B":"24 cm","C":"30 cm","D":"36 cm"},"correct_answer":"B"},
  {"id":113,"difficulty":"medium","question":"Find the perimeter of a figure formed by joining two rectangles 5×3 and 3×3 along the 3 cm side.","options":{"A":"20 units","B":"22 units","C":"24 units","D":"26 units"},"correct_answer":"C"},
  {"id":114,"difficulty":"medium","question":"A rectilinear figure has sides 7.5 cm, 4.2 cm, 6.3 cm, 3.8 cm, and 5.2 cm. Find its perimeter.","options":{"A":"26.0 cm","B":"26.5 cm","C":"27.0 cm","D":"27.5 cm"},"correct_answer":"B"},
  {"id":115,"difficulty":"medium","question":"A rectangle has perimeter 64 m. If its length is 18 m, find its breadth.","options":{"A":"12 m","B":"14 m","C":"16 m","D":"18 m"},"correct_answer":"B"},
  {"id":116,"difficulty":"medium","question":"Find the missing side if the perimeter is 52 cm and the known sides are 12 cm, 15 cm, 10 cm, and 7 cm.","options":{"A":"6 cm","B":"7 cm","C":"8 cm","D":"9 cm"},"correct_answer":"C"},
  {"id":117,"difficulty":"medium","question":"A figure has sides 0.6 m, 45 cm, 350 mm, and 0.25 m. What is the perimeter in meters?","options":{"A":"1.65 m","B":"1.70 m","C":"1.75 m","D":"1.80 m"},"correct_answer":"C"},
  {"id":118,"difficulty":"medium","question":"Find the perimeter of a staircase figure of 3 steps, each step 2 cm by 2 cm.","options":{"A":"20 cm","B":"22 cm","C":"24 cm","D":"26 cm"},"correct_answer":"C"},
  {"id":119,"difficulty":"medium","question":"A U-shaped figure has outer dimensions 10 cm by 8 cm and inner cut-out 6 cm by 4 cm. What is the perimeter?","options":{"A":"40 cm","B":"44 cm","C":"48 cm","D":"52 cm"},"correct_answer":"B"},
  {"id":120,"difficulty":"medium","question":"Find the perimeter of a rectilinear figure with sides 5.4 m, 3.6 m, 4.8 m, 2.2 m, and 6.0 m.","options":{"A":"21.0 m","B":"21.6 m","C":"22.0 m","D":"22.8 m"},"correct_answer":"B"},

  {"id":121,"difficulty":"hard","question":"An L-shaped figure is made from two rectangles 8×5 and 5×3. Find the perimeter.","options":{"A":"30 units","B":"32 units","C":"34 units","D":"36 units"},"correct_answer":"C"},
  {"id":122,"difficulty":"hard","question":"A square of side 6 cm has a square of side 2 cm removed from one corner. What is the perimeter of the remaining figure?","options":{"A":"20 cm","B":"24 cm","C":"28 cm","D":"32 cm"},"correct_answer":"C"},
  {"id":123,"difficulty":"hard","question":"Find the perimeter of a plus-shaped figure made of five squares each of side 4 cm.","options":{"A":"48 cm","B":"56 cm","C":"64 cm","D":"72 cm"},"correct_answer":"B"},
  {"id":124,"difficulty":"hard","question":"A frame has outer rectangle 14×10 cm and inner rectangle 10×6 cm. Find the perimeter of the frame.","options":{"A":"44 cm","B":"48 cm","C":"52 cm","D":"56 cm"},"correct_answer":"C"},
  {"id":125,"difficulty":"hard","question":"A rectilinear figure has perimeter 96 m. If five sides measure 18 m, 16 m, 14 m, 12 m, and 20 m, find the sixth side.","options":{"A":"10 m","B":"12 m","C":"14 m","D":"16 m"},"correct_answer":"A"},
  {"id":126,"difficulty":"hard","question":"Find the perimeter of a figure formed by attaching a square of side 6 cm to a rectangle 10×6 cm along the 6 cm side.","options":{"A":"32 cm","B":"36 cm","C":"40 cm","D":"44 cm"},"correct_answer":"C"},
  {"id":127,"difficulty":"hard","question":"A U-shaped figure has outer dimensions 18×12 units and uniform thickness 3 units. Find the perimeter.","options":{"A":"60 units","B":"66 units","C":"72 units","D":"78 units"},"correct_answer":"B"},
  {"id":128,"difficulty":"hard","question":"A rectilinear figure has sides in the ratio 2:3:4:5:6 and total perimeter 80 cm. Find the longest side.","options":{"A":"16 cm","B":"18 cm","C":"20 cm","D":"24 cm"},"correct_answer":"C"},
  {"id":129,"difficulty":"hard","question":"Find the perimeter of a staircase figure of 4 steps, each step 3 cm by 3 cm.","options":{"A":"36 cm","B":"42 cm","C":"48 cm","D":"54 cm"},"correct_answer":"C"},
  {"id":130,"difficulty":"hard","question":"A composite rectilinear figure has an outer rectangle 20×12 cm and a rectangular cut-out 8×4 cm. What is the perimeter?","options":{"A":"64 cm","B":"68 cm","C":"72 cm","D":"76 cm"},"correct_answer":"B"}
]
}