{
  "title": "Area of Rectangle & Square - Grade 4 ICSE",
  "total_questions": 60,
  "questions": [
    {
      "id": 1,
      "difficulty": "easy",
      "question": "📏 A square has side 4 cm. What is its area? 🟨",
      "options": { "A": "8 cm²", "B": "12 cm²", "C": "16 cm²", "D": "20 cm²" },
      "correct_answer": "C"
    },
    {
      "id": 2,
      "difficulty": "easy",
      "question": "📐 Rectangle: length 5 cm, width 3 cm. Area = ?",
      "options": { "A": "8 cm²", "B": "12 cm²", "C": "15 cm²", "D": "18 cm²" },
      "correct_answer": "C"
    },
    {
      "id": 3,
      "difficulty": "easy",
      "question": "🟦 Square side = 6 cm. Area = ?",
      "options": { "A": "24 cm²", "B": "30 cm²", "C": "36 cm²", "D": "42 cm²" },
      "correct_answer": "C"
    },
    {
      "id": 4,
      "difficulty": "easy",
      "question": "📏 Rectangle: 7 cm long, 2 cm wide. Area = ?",
      "options": { "A": "9 cm²", "B": "12 cm²", "C": "14 cm²", "D": "16 cm²" },
      "correct_answer": "C"
    },
    {
      "id": 5,
      "difficulty": "easy",
      "question": "🟨 Square side = 8 m. Area = ?",
      "options": { "A": "32 m²", "B": "48 m²", "C": "56 m²", "D": "64 m²" },
      "correct_answer": "D"
    },
    {
      "id": 6,
      "difficulty": "easy",
      "question": "📐 Rectangle: length 9 cm, width 4 cm. Area = ?",
      "options": { "A": "26 cm²", "B": "32 cm²", "C": "36 cm²", "D": "40 cm²" },
      "correct_answer": "C"
    },
    {
      "id": 7,
      "difficulty": "easy",
      "question": "🟦 Square side = 10 cm. Area = ?",
      "options": {
        "A": "40 cm²",
        "B": "80 cm²",
        "C": "100 cm²",
        "D": "120 cm²"
      },
      "correct_answer": "C"
    },
    {
      "id": 8,
      "difficulty": "easy",
      "question": "📏 Rectangle: 6 m long, 5 m wide. Area = ?",
      "options": { "A": "22 m²", "B": "28 m²", "C": "30 m²", "D": "32 m²" },
      "correct_answer": "C"
    },
    {
      "id": 9,
      "difficulty": "easy",
      "question": "🟨 Square side = 12 cm. Area = ?",
      "options": {
        "A": "48 cm²",
        "B": "96 cm²",
        "C": "120 cm²",
        "D": "144 cm²"
      },
      "correct_answer": "D"
    },
    {
      "id": 10,
      "difficulty": "easy",
      "question": "📐 Rectangle: length 11 cm, width 3 cm. Area = ?",
      "options": { "A": "28 cm²", "B": "31 cm²", "C": "33 cm²", "D": "35 cm²" },
      "correct_answer": "C"
    },
    {
      "id": 11,
      "difficulty": "easy",
      "question": "🟦 Square side = 9 m. Area = ?",
      "options": { "A": "36 m²", "B": "63 m²", "C": "72 m²", "D": "81 m²" },
      "correct_answer": "D"
    },
    {
      "id": 12,
      "difficulty": "easy",
      "question": "📏 Rectangle: 8 cm long, 4 cm wide. Area = ?",
      "options": { "A": "24 cm²", "B": "28 cm²", "C": "32 cm²", "D": "36 cm²" },
      "correct_answer": "C"
    },
    {
      "id": 13,
      "difficulty": "easy",
      "question": "🟨 Square side = 15 cm. Area = ?",
      "options": {
        "A": "60 cm²",
        "B": "120 cm²",
        "C": "180 cm²",
        "D": "225 cm²"
      },
      "correct_answer": "D"
    },
    {
      "id": 14,
      "difficulty": "easy",
      "question": "📐 Rectangle: length 10 m, width 6 m. Area = ?",
      "options": { "A": "40 m²", "B": "50 m²", "C": "60 m²", "D": "70 m²" },
      "correct_answer": "C"
    },
    {
      "id": 15,
      "difficulty": "easy",
      "question": "🟦 Square side = 20 cm. Area = ?",
      "options": {
        "A": "80 cm²",
        "B": "200 cm²",
        "C": "400 cm²",
        "D": "800 cm²"
      },
      "correct_answer": "C"
    },
    {
      "id": 16,
      "difficulty": "easy",
      "question": "📏 Rectangle: 12 cm long, 7 cm wide. Area = ?",
      "options": { "A": "76 cm²", "B": "80 cm²", "C": "84 cm²", "D": "88 cm²" },
      "correct_answer": "C"
    },
    {
      "id": 17,
      "difficulty": "easy",
      "question": "🟨 Square side = 25 cm. Area = ?",
      "options": {
        "A": "100 cm²",
        "B": "500 cm²",
        "C": "625 cm²",
        "D": "750 cm²"
      },
      "correct_answer": "C"
    },
    {
      "id": 18,
      "difficulty": "easy",
      "question": "📐 Rectangle: length 14 m, width 5 m. Area = ?",
      "options": { "A": "60 m²", "B": "65 m²", "C": "70 m²", "D": "75 m²" },
      "correct_answer": "C"
    },
    {
      "id": 19,
      "difficulty": "easy",
      "question": "🟦 Square side = 30 cm. Area = ?",
      "options": {
        "A": "90 cm²",
        "B": "300 cm²",
        "C": "600 cm²",
        "D": "900 cm²"
      },
      "correct_answer": "D"
    },
    {
      "id": 20,
      "difficulty": "easy",
      "question": "📏 Rectangle: 16 cm long, 9 cm wide. Area = ?",
      "options": {
        "A": "128 cm²",
        "B": "136 cm²",
        "C": "144 cm²",
        "D": "152 cm²"
      },
      "correct_answer": "C"
    },

    {
      "id": 21,
      "difficulty": "medium",
      "question": "🏠 A room is 8m long, 6m wide. What area of carpet is needed? 🏡",
      "options": { "A": "40 m²", "B": "44 m²", "C": "48 m²", "D": "52 m²" },
      "correct_answer": "C"
    },
    {
      "id": 22,
      "difficulty": "medium",
      "question": "📚 Book cover: 24 cm long, 18 cm wide. Area = ?",
      "options": {
        "A": "400 cm²",
        "B": "420 cm²",
        "C": "432 cm²",
        "D": "450 cm²"
      },
      "correct_answer": "C"
    },
    {
      "id": 23,
      "difficulty": "medium",
      "question": "🟨 Square area = 121 cm². What is its side length?",
      "options": { "A": "10 cm", "B": "11 cm", "C": "12 cm", "D": "13 cm" },
      "correct_answer": "B"
    },
    {
      "id": 24,
      "difficulty": "medium",
      "question": "📏 Rectangle area = 72 m², width = 8 m. Length = ?",
      "options": { "A": "7 m", "B": "8 m", "C": "9 m", "D": "10 m" },
      "correct_answer": "C"
    },
    {
      "id": 25,
      "difficulty": "medium",
      "question": "🟦 Square area = 256 cm². Side = ?",
      "options": { "A": "14 cm", "B": "16 cm", "C": "18 cm", "D": "20 cm" },
      "correct_answer": "B"
    },
    {
      "id": 26,
      "difficulty": "medium",
      "question": "📐 Rectangle: length 15 cm, area = 135 cm². Width = ?",
      "options": { "A": "7 cm", "B": "8 cm", "C": "9 cm", "D": "10 cm" },
      "correct_answer": "C"
    },
    {
      "id": 27,
      "difficulty": "medium",
      "question": "🏀 Court: 28m long, 15m wide. Area = ?",
      "options": { "A": "380 m²", "B": "400 m²", "C": "420 m²", "D": "450 m²" },
      "correct_answer": "C"
    },
    {
      "id": 28,
      "difficulty": "medium",
      "question": "🟨 Square area = 400 m². Side = ?",
      "options": { "A": "18 m", "B": "20 m", "C": "22 m", "D": "24 m" },
      "correct_answer": "B"
    },
    {
      "id": 29,
      "difficulty": "medium",
      "question": "📏 Rectangle area = 96 cm², length = 12 cm. Width = ?",
      "options": { "A": "6 cm", "B": "7 cm", "C": "8 cm", "D": "9 cm" },
      "correct_answer": "C"
    },
    {
      "id": 30,
      "difficulty": "medium",
      "question": "🟦 Square side increased from 5 cm to 10 cm. Area becomes ___ times",
      "options": { "A": "2", "B": "3", "C": "4", "D": "5" },
      "correct_answer": "C"
    },
    {
      "id": 31,
      "difficulty": "medium",
      "question": "📚 Two rectangles: A=6×4, B=8×3. Which has larger area?",
      "options": { "A": "A", "B": "B", "C": "Same", "D": "Can't say" },
      "correct_answer": "C"
    },
    {
      "id": 32,
      "difficulty": "medium",
      "question": "🟨 Square area = 169 cm². Side = ?",
      "options": { "A": "11 cm", "B": "12 cm", "C": "13 cm", "D": "14 cm" },
      "correct_answer": "C"
    },
    {
      "id": 33,
      "difficulty": "medium",
      "question": "📏 Rectangle: length doubled, width halved. Area becomes ___ times",
      "options": {
        "A": "Same",
        "B": "2 times",
        "C": "4 times",
        "D": "½ times"
      },
      "correct_answer": "A"
    },
    {
      "id": 34,
      "difficulty": "medium",
      "question": "🏠 Room: 9m×7m. How many 1m×1m tiles needed?",
      "options": { "A": "56", "B": "63", "C": "70", "D": "77" },
      "correct_answer": "B"
    },
    {
      "id": 35,
      "difficulty": "medium",
      "question": "🟦 Square area = 625 m². Side = ?",
      "options": { "A": "23 m", "B": "24 m", "C": "25 m", "D": "26 m" },
      "correct_answer": "C"
    },
    {
      "id": 36,
      "difficulty": "medium",
      "question": "📐 Rectangle: area 84 m², width 7 m. Length = ?",
      "options": { "A": "10 m", "B": "11 m", "C": "12 m", "D": "13 m" },
      "correct_answer": "C"
    },
    {
      "id": 37,
      "difficulty": "medium",
      "question": "🟨 Square perimeter = 48 cm. Area = ?",
      "options": {
        "A": "144 cm²",
        "B": "136 cm²",
        "C": "128 cm²",
        "D": "120 cm²"
      },
      "correct_answer": "A"
    },
    {
      "id": 38,
      "difficulty": "medium",
      "question": "📏 Rectangle: length 18 cm, area 162 cm². Width = ?",
      "options": { "A": "7 cm", "B": "8 cm", "C": "9 cm", "D": "10 cm" },
      "correct_answer": "C"
    },
    {
      "id": 39,
      "difficulty": "medium",
      "question": "🟦 Square area = 576 cm². Side = ?",
      "options": { "A": "22 cm", "B": "24 cm", "C": "26 cm", "D": "28 cm" },
      "correct_answer": "B"
    },
    {
      "id": 40,
      "difficulty": "medium",
      "question": "📚 Photo: 20 cm long, 15 cm wide. Area in dm²? (1 dm=10 cm)",
      "options": {
        "A": "3 dm²",
        "B": "30 dm²",
        "C": "300 dm²",
        "D": "3000 dm²"
      },
      "correct_answer": "A"
    },

    {
      "id": 41,
      "difficulty": "hard",
      "question": "🏡 A rectangular garden 32m×24m has a 2m wide path inside. Area of inner garden?",
      "options": { "A": "560 m²", "B": "600 m²", "C": "640 m²", "D": "680 m²" },
      "correct_answer": "A"
    },
    {
      "id": 42,
      "difficulty": "hard",
      "question": "📏 Rectangle length is 3 times width. Area=192 cm². Length = ?",
      "options": { "A": "12 cm", "B": "18 cm", "C": "24 cm", "D": "30 cm" },
      "correct_answer": "C"
    },
    {
      "id": 43,
      "difficulty": "hard",
      "question": "🟨 Two squares: side ratio 2:3. Area ratio = ?",
      "options": { "A": "2:3", "B": "3:4", "C": "4:9", "D": "9:16" },
      "correct_answer": "C"
    },
    {
      "id": 44,
      "difficulty": "hard",
      "question": "📐 Rectangle area increased by 44% when length increased 20%. Width change?",
      "options": { "A": "+10%", "B": "+15%", "C": "+20%", "D": "+25%" },
      "correct_answer": "C"
    },
    {
      "id": 45,
      "difficulty": "hard",
      "question": "🏠 Room 12m×10m. Carpet covers ¾ area. Uncovered area?",
      "options": { "A": "24 m²", "B": "30 m²", "C": "36 m²", "D": "42 m²" },
      "correct_answer": "B"
    },
    {
      "id": 46,
      "difficulty": "hard",
      "question": "🟦 Square area = 1 m² 44 cm². Side in cm? (1 m=100 cm)",
      "options": {
        "A": "98 cm",
        "B": "100 cm",
        "C": "100.22 cm",
        "D": "102 cm"
      },
      "correct_answer": "C"
    },
    {
      "id": 47,
      "difficulty": "hard",
      "question": "📏 Rectangle length increased by 25%, width decreased by 20%. Area change?",
      "options": { "A": "No change", "B": "+5%", "C": "-5%", "D": "+10%" },
      "correct_answer": "A"
    },
    {
      "id": 48,
      "difficulty": "hard",
      "question": "🟨 Square divided into 4 equal squares. Each small square area=36 cm². Original square side?",
      "options": { "A": "12 cm", "B": "14 cm", "C": "16 cm", "D": "18 cm" },
      "correct_answer": "A"
    },
    {
      "id": 49,
      "difficulty": "hard",
      "question": "📐 Two rectangles: A=15×12, B=18×10. Difference in areas?",
      "options": { "A": "0", "B": "10", "C": "20", "D": "30" },
      "correct_answer": "A"
    },
    {
      "id": 50,
      "difficulty": "hard",
      "question": "🏡 Plot 40m×30m. House built on ¾ area. Garden area?",
      "options": { "A": "240 m²", "B": "280 m²", "C": "300 m²", "D": "320 m²" },
      "correct_answer": "C"
    },
    {
      "id": 51,
      "difficulty": "hard",
      "question": "🟦 Square area increased from 64 cm² to 144 cm². Side increased by?",
      "options": { "A": "2 cm", "B": "3 cm", "C": "4 cm", "D": "5 cm" },
      "correct_answer": "C"
    },
    {
      "id": 52,
      "difficulty": "hard",
      "question": "📏 Rectangle length:width = 5:3. Area=240 cm². Perimeter = ?",
      "options": { "A": "56 cm", "B": "60 cm", "C": "64 cm", "D": "68 cm" },
      "correct_answer": "C"
    },
    {
      "id": 53,
      "difficulty": "hard",
      "question": "🟨 Square tiles 20cm×20cm needed for 4m×3m floor?",
      "options": { "A": "200", "B": "250", "C": "300", "D": "350" },
      "correct_answer": "C"
    },
    {
      "id": 54,
      "difficulty": "hard",
      "question": "📐 Rectangle divided into 3 equal squares. Each square area=49 cm². Rectangle area?",
      "options": {
        "A": "98 cm²",
        "B": "126 cm²",
        "C": "147 cm²",
        "D": "196 cm²"
      },
      "correct_answer": "C"
    },
    {
      "id": 55,
      "difficulty": "hard",
      "question": "🏠 Room 8m×6m. Border of 0.5m width carpet. Inner area?",
      "options": { "A": "35 m²", "B": "40 m²", "C": "45 m²", "D": "50 m²" },
      "correct_answer": "A"
    },
    {
      "id": 56,
      "difficulty": "hard",
      "question": "🟦 Square area in cm² equals its perimeter in cm. Side = ?",
      "options": { "A": "2 cm", "B": "3 cm", "C": "4 cm", "D": "5 cm" },
      "correct_answer": "C"
    },
    {
      "id": 57,
      "difficulty": "hard",
      "question": "📏 Rectangle length increased by 2m, width decreased by 1m. Area increased by 4 m². Original length if width=6m?",
      "options": {
        "A": "5 m",
        "B": "6 m",
        "C": "7 m",
        "D": "8 m"
      },
      "correct_answer": "B"
    },
    {
      "id": 58,
      "difficulty": "hard",
      "question": "🟨 Square perimeter = Rectangle perimeter 40 cm. Rectangle area=96 cm². Square area?",
      "options": {
        "A": "64 cm²",
        "B": "81 cm²",
        "C": "100 cm²",
        "D": "121 cm²"
      },
      "correct_answer": "C"
    },
    {
      "id": 59,
      "difficulty": "hard",
      "question": "📐 Two rectangles have same area 120 cm². One 12×10, other 15×8. True statement?",
      "options": {
        "A": "Both same shape",
        "B": "Different perimeters",
        "C": "Same perimeter",
        "D": "Both squares"
      },
      "correct_answer": "B"
    },
    {
      "id": 60,
      "difficulty": "hard",
      "question": "🏡 Garden 25m×20m. Path 2m wide inside. Area of path?",
      "options": {
        "A": "156 m²",
        "B": "160 m²",
        "C": "164 m²",
        "D": "168 m²"
      },
      "correct_answer": "C"
    }
  ]
}