{
  "title": "Perimeter of Polygons (Mensuration) - Grade 5 ICSE",
  "total_questions": 60,
  "questions": [
    {
      "id": 1,
      "difficulty": "easy",
      "question": "What is perimeter of square with side=5 cm? ⬜",
      "options": { "A": "15 cm", "B": "20 cm", "C": "25 cm", "D": "30 cm" },
      "correct_answer": "B"
    },
    {
      "id": 2,
      "difficulty": "easy",
      "question": "Perimeter means: 📏",
      "options": {
        "A": "Area inside",
        "B": "Distance around",
        "C": "Height",
        "D": "Width"
      },
      "correct_answer": "B"
    },
    {
      "id": 3,
      "difficulty": "easy",
      "question": "Rectangle: length=8 cm, width=5 cm. Perimeter=? 📐",
      "options": { "A": "20 cm", "B": "24 cm", "C": "26 cm", "D": "28 cm" },
      "correct_answer": "C"
    },
    {
      "id": 4,
      "difficulty": "easy",
      "question": "Square side=7 cm. Perimeter=? 🔲",
      "options": { "A": "24 cm", "B": "26 cm", "C": "28 cm", "D": "30 cm" },
      "correct_answer": "C"
    },
    {
      "id": 5,
      "difficulty": "easy",
      "question": "Triangle with sides 3 cm, 4 cm, 5 cm. Perimeter=? 🔺",
      "options": { "A": "10 cm", "B": "11 cm", "C": "12 cm", "D": "13 cm" },
      "correct_answer": "C"
    },
    {
      "id": 6,
      "difficulty": "easy",
      "question": "Perimeter of rectangle = 2 × (_____ + width) ❓",
      "options": { "A": "height", "B": "length", "C": "side", "D": "base" },
      "correct_answer": "B"
    },
    {
      "id": 7,
      "difficulty": "easy",
      "question": "Pentagon with all sides=6 cm. Perimeter=? ⬟",
      "options": { "A": "24 cm", "B": "28 cm", "C": "30 cm", "D": "32 cm" },
      "correct_answer": "C"
    },
    {
      "id": 8,
      "difficulty": "easy",
      "question": "A square garden side=15 m. Fence needed=? 🌳",
      "options": { "A": "45 m", "B": "50 m", "C": "55 m", "D": "60 m" },
      "correct_answer": "D"
    },
    {
      "id": 9,
      "difficulty": "easy",
      "question": "If perimeter of square=36 cm, side=? 🔍",
      "options": { "A": "8 cm", "B": "9 cm", "C": "10 cm", "D": "11 cm" },
      "correct_answer": "B"
    },
    {
      "id": 10,
      "difficulty": "easy",
      "question": "Which shape has all sides equal for perimeter calculation? 🤔",
      "options": {
        "A": "Rectangle",
        "B": "Triangle",
        "C": "Square",
        "D": "All polygons"
      },
      "correct_answer": "C"
    },
    {
      "id": 11,
      "difficulty": "easy",
      "question": "Hexagon side=4 cm. Perimeter=? ⬢",
      "options": { "A": "20 cm", "B": "22 cm", "C": "24 cm", "D": "26 cm" },
      "correct_answer": "C"
    },
    {
      "id": 12,
      "difficulty": "easy",
      "question": "Rectangular photo frame: length=25 cm, width=20 cm. Perimeter? 🖼️",
      "options": { "A": "85 cm", "B": "90 cm", "C": "95 cm", "D": "100 cm" },
      "correct_answer": "B"
    },
    {
      "id": 13,
      "difficulty": "easy",
      "question": "Perimeter=48 m, square side=? 📐",
      "options": { "A": "10 m", "B": "11 m", "C": "12 m", "D": "13 m" },
      "correct_answer": "C"
    },
    {
      "id": 14,
      "difficulty": "easy",
      "question": "Triangle sides: 7 cm, 8 cm, 9 cm. Calculate perimeter. 🧮",
      "options": { "A": "22 cm", "B": "23 cm", "C": "24 cm", "D": "25 cm" },
      "correct_answer": "C"
    },
    {
      "id": 15,
      "difficulty": "easy",
      "question": "Which is NOT needed for perimeter? ❌",
      "options": {
        "A": "Side lengths",
        "B": "Number of sides",
        "C": "Height",
        "D": "All sides"
      },
      "correct_answer": "C"
    },
    {
      "id": 16,
      "difficulty": "easy",
      "question": "Perimeter=60 cm, rectangle length=20 cm, width=? 🔢",
      "options": { "A": "8 cm", "B": "9 cm", "C": "10 cm", "D": "11 cm" },
      "correct_answer": "C"
    },
    {
      "id": 17,
      "difficulty": "easy",
      "question": "Octagon side=5 cm. Perimeter=? ✴️",
      "options": { "A": "35 cm", "B": "38 cm", "C": "40 cm", "D": "42 cm" },
      "correct_answer": "C"
    },
    {
      "id": 18,
      "difficulty": "easy",
      "question": "A running track rectangle: length=100 m, width=60 m. One lap distance? 🏃",
      "options": { "A": "300 m", "B": "310 m", "C": "320 m", "D": "330 m" },
      "correct_answer": "C"
    },
    {
      "id": 19,
      "difficulty": "easy",
      "question": "True or False: Perimeter is measured in square units. ✅❎",
      "options": {
        "A": "True",
        "B": "False",
        "C": "Sometimes",
        "D": "For area only"
      },
      "correct_answer": "B"
    },
    {
      "id": 20,
      "difficulty": "easy",
      "question": "Regular pentagon side=8 cm. Perimeter=? ⬟",
      "options": { "A": "36 cm", "B": "38 cm", "C": "40 cm", "D": "42 cm" },
      "correct_answer": "C"
    },
    {
      "id": 21,
      "difficulty": "medium",
      "question": "Rectangle perimeter=52 cm. Length=16 cm. Find width. 📏",
      "options": { "A": "8 cm", "B": "9 cm", "C": "10 cm", "D": "11 cm" },
      "correct_answer": "C"
    },
    {
      "id": 22,
      "difficulty": "medium",
      "question": "Two squares: First side=9 cm, Second side=12 cm. Difference in perimeters? ⚖️",
      "options": { "A": "10 cm", "B": "11 cm", "C": "12 cm", "D": "13 cm" },
      "correct_answer": "C"
    },
    {
      "id": 23,
      "difficulty": "medium",
      "question": "Regular hexagon perimeter=54 cm. Side length=? ⬢",
      "options": { "A": "8 cm", "B": "8.5 cm", "C": "9 cm", "D": "9.5 cm" },
      "correct_answer": "C"
    },
    {
      "id": 24,
      "difficulty": "medium",
      "question": "Triangle perimeter=45 cm. Two sides=15 cm, 18 cm. Third side=? 🔺",
      "options": { "A": "10 cm", "B": "11 cm", "C": "12 cm", "D": "13 cm" },
      "correct_answer": "C"
    },
    {
      "id": 25,
      "difficulty": "medium",
      "question": "Square and equilateral triangle have equal perimeters. Square side=12 cm. Triangle side=? 🔄",
      "options": { "A": "14 cm", "B": "15 cm", "C": "16 cm", "D": "17 cm" },
      "correct_answer": "C"
    },
    {
      "id": 26,
      "difficulty": "medium",
      "question": "Rectangular pool: length=25 m, width=15 m. Fencing 3 sides (excluding one width). Fence length? 🏊",
      "options": { "A": "60 m", "B": "62 m", "C": "64 m", "D": "65 m" },
      "correct_answer": "D"
    },
    {
      "id": 27,
      "difficulty": "medium",
      "question": "If all sides of polygon doubled, perimeter becomes? 🔄",
      "options": {
        "A": "Same",
        "B": "Doubled",
        "C": "Tripled",
        "D": "Quadrupled"
      },
      "correct_answer": "B"
    },
    {
      "id": 28,
      "difficulty": "medium",
      "question": "Pentagon perimeter=65 cm. Side=? ⬟",
      "options": { "A": "12 cm", "B": "13 cm", "C": "14 cm", "D": "15 cm" },
      "correct_answer": "B"
    },
    {
      "id": 29,
      "difficulty": "medium",
      "question": "Square field perimeter=240 m. Side=? Then area=? 🌾",
      "options": {
        "A": "Side=60 m, Area=3600 m²",
        "B": "Side=50 m, Area=2500 m²",
        "C": "Side=55 m, Area=3025 m²",
        "D": "Side=65 m, Area=4225 m²"
      },
      "correct_answer": "A"
    },
    {
      "id": 30,
      "difficulty": "medium",
      "question": "Regular octagon side=7.5 cm. Perimeter=? ✴️",
      "options": { "A": "56 cm", "B": "58 cm", "C": "60 cm", "D": "62 cm" },
      "correct_answer": "C"
    },
    {
      "id": 31,
      "difficulty": "medium",
      "question": "Two rectangles have same perimeter 40 cm. First: length=12 cm. Second: length=14 cm. Their widths? ⚖️",
      "options": {
        "A": "8 cm & 6 cm",
        "B": "7 cm & 5 cm",
        "C": "9 cm & 7 cm",
        "D": "10 cm & 8 cm"
      },
      "correct_answer": "A"
    },
    {
      "id": 32,
      "difficulty": "medium",
      "question": "Equilateral triangle perimeter=39 cm. Side=? 🔺",
      "options": { "A": "12 cm", "B": "13 cm", "C": "14 cm", "D": "15 cm" },
      "correct_answer": "B"
    },
    {
      "id": 33,
      "difficulty": "medium",
      "question": "Irregular pentagon sides: 8, 9, 10, 11, 12 cm. Perimeter=? ⬟",
      "options": { "A": "48 cm", "B": "49 cm", "C": "50 cm", "D": "51 cm" },
      "correct_answer": "C"
    },
    {
      "id": 34,
      "difficulty": "medium",
      "question": "If square side increased by 3 cm from original 10 cm, perimeter increase=? 🔢",
      "options": { "A": "6 cm", "B": "9 cm", "C": "12 cm", "D": "15 cm" },
      "correct_answer": "C"
    },
    {
      "id": 35,
      "difficulty": "medium",
      "question": "Rectangle: perimeter=86 cm, length=25 cm. Width=? 📏",
      "options": { "A": "16 cm", "B": "17 cm", "C": "18 cm", "D": "19 cm" },
      "correct_answer": "C"
    },
    {
      "id": 36,
      "difficulty": "medium",
      "question": "Hexagonal table side=45 cm. Perimeter in meters? (100 cm=1 m) 🪑",
      "options": { "A": "2.5 m", "B": "2.6 m", "C": "2.7 m", "D": "2.8 m" },
      "correct_answer": "C"
    },
    {
      "id": 37,
      "difficulty": "medium",
      "question": "Square perimeter=1.2 m. Side in cm? 🧮",
      "options": { "A": "28 cm", "B": "29 cm", "C": "30 cm", "D": "31 cm" },
      "correct_answer": "C"
    },
    {
      "id": 38,
      "difficulty": "medium",
      "question": "Triangle perimeter=72 cm. Sides ratio 3:4:5. Sides lengths? 🔺",
      "options": {
        "A": "16, 20, 24 cm",
        "B": "15, 20, 25 cm",
        "C": "18, 24, 30 cm",
        "D": "21, 28, 35 cm"
      },
      "correct_answer": "C"
    },
    {
      "id": 39,
      "difficulty": "medium",
      "question": "Regular polygon with 9 sides (nonagon) side=11 cm. Perimeter=? 9️⃣",
      "options": { "A": "95 cm", "B": "97 cm", "C": "99 cm", "D": "101 cm" },
      "correct_answer": "C"
    },
    {
      "id": 40,
      "difficulty": "medium",
      "question": "Rectangle perimeter=120 m. Length is twice width. Dimensions? 📐",
      "options": {
        "A": "Length=35 m, Width=17.5 m",
        "B": "Length=38 m, Width=19 m",
        "C": "Length=40 m, Width=20 m",
        "D": "Length=42 m, Width=21 m"
      },
      "correct_answer": "C"
    },
    {
      "id": 41,
      "difficulty": "hard",
      "question": "Square and equilateral triangle have equal perimeters. Square area=144 cm². Find triangle side. 📐",
      "options": { "A": "14 cm", "B": "15 cm", "C": "16 cm", "D": "17 cm" },
      "correct_answer": "C"
    },
    {
      "id": 42,
      "difficulty": "hard",
      "question": "Regular hexagon perimeter=7.2 m. Side in cm? ⬢",
      "options": { "A": "115 cm", "B": "118 cm", "C": "120 cm", "D": "122 cm" },
      "correct_answer": "C"
    },
    {
      "id": 43,
      "difficulty": "hard",
      "question": "Rectangle perimeter=94 cm. Length is 7 cm more than width. Find area. 📊",
      "options": {
        "A": "520 cm²",
        "B": "530 cm²",
        "C": "540 cm²",
        "D": "550 cm²"
      },
      "correct_answer": "C"
    },
    {
      "id": 44,
      "difficulty": "hard",
      "question": "Walk around rectangular park 3 times. Park: 150 m × 90 m. Total distance? 🚶",
      "options": { "A": "1380 m", "B": "1400 m", "C": "1420 m", "D": "1440 m" },
      "correct_answer": "D"
    },
    {
      "id": 45,
      "difficulty": "hard",
      "question": "Square and regular pentagon. Square perimeter=100 cm. Pentagon side=12 cm. Difference in perimeters? ⚖️",
      "options": {
        "A": "36 cm",
        "B": "38 cm",
        "C": "40 cm",
        "D": "42 cm"
      },
      "correct_answer": "C"
    },
    {
      "id": 46,
      "difficulty": "hard",
      "question": "Triangle sides ratio 2:3:4. Perimeter=81 cm. Longest side=? 🔺",
      "options": { "A": "34 cm", "B": "35 cm", "C": "36 cm", "D": "37 cm" },
      "correct_answer": "C"
    },
    {
      "id": 47,
      "difficulty": "hard",
      "question": "Fencing rectangular garden cost ₹75/m. Perimeter=96 m. Total cost? 💰",
      "options": { "A": "₹7,000", "B": "₹7,100", "C": "₹7,200", "D": "₹7,300" },
      "correct_answer": "C"
    },
    {
      "id": 48,
      "difficulty": "hard",
      "question": "Square side increased by 20%. Perimeter increase %? 📈",
      "options": { "A": "10%", "B": "15%", "C": "20%", "D": "25%" },
      "correct_answer": "C"
    },
    {
      "id": 49,
      "difficulty": "hard",
      "question": "Regular heptagon (7 sides) perimeter=10.5 m. Side in cm? 7️⃣",
      "options": { "A": "145 cm", "B": "148 cm", "C": "150 cm", "D": "152 cm" },
      "correct_answer": "C"
    },
    {
      "id": 50,
      "difficulty": "hard",
      "question": "Rectangle perimeter=180 cm. Length:Width = 5:4. Find area. 📊",
      "options": {
        "A": "1900 cm²",
        "B": "1950 cm²",
        "C": "2000 cm²",
        "D": "2050 cm²"
      },
      "correct_answer": "C"
    },
    {
      "id": 51,
      "difficulty": "hard",
      "question": "Equilateral triangle and square have same perimeter=60 cm. Difference in sides? ⚖️",
      "options": { "A": "3 cm", "B": "4 cm", "C": "5 cm", "D": "6 cm" },
      "correct_answer": "C"
    },
    {
      "id": 52,
      "difficulty": "hard",
      "question": "Octagonal stop sign side=30 cm. Perimeter in meters? 🛑",
      "options": { "A": "2.2 m", "B": "2.3 m", "C": "2.4 m", "D": "2.5 m" },
      "correct_answer": "C"
    },
    {
      "id": 53,
      "difficulty": "hard",
      "question": "Square perimeter=48 cm. Rectangle has same perimeter with length=15 cm. Width=? 🔄",
      "options": { "A": "7 cm", "B": "8 cm", "C": "9 cm", "D": "10 cm" },
      "correct_answer": "C"
    },
    {
      "id": 54,
      "difficulty": "hard",
      "question": "Regular polygon with 12 sides perimeter=144 cm. Side=? 🔢",
      "options": { "A": "10 cm", "B": "11 cm", "C": "12 cm", "D": "13 cm" },
      "correct_answer": "C"
    },
    {
      "id": 55,
      "difficulty": "hard",
      "question": "Triangle perimeter=57 cm. Two sides=18 cm, 22 cm. Third side=? 🔺",
      "options": { "A": "16 cm", "B": "17 cm", "C": "18 cm", "D": "19 cm" },
      "correct_answer": "B"
    },
    {
      "id": 56,
      "difficulty": "hard",
      "question": "Rectangle length increased by 10%, width decreased by 10%. Perimeter change %? 📈",
      "options": {
        "A": "No change",
        "B": "+5%",
        "C": "-5%",
        "D": "Cannot be determined"
      },
      "correct_answer": "D"
    },
    {
      "id": 57,
      "difficulty": "hard",
      "question": "Hexagon perimeter=9.6 m. Pentagon perimeter=7.5 m. Difference in cm? ⬢⬟",
      "options": { "A": "200 cm", "B": "205 cm", "C": "210 cm", "D": "215 cm" },
      "correct_answer": "C"
    },
    {
      "id": 58,
      "difficulty": "hard",
      "question": "Fencing cost ₹120/m. Triangular plot sides 45 m, 60 m, 75 m. Total cost? 💰",
      "options": {
        "A": "₹21,000",
        "B": "₹21,200",
        "C": "₹21,600",
        "D": "₹22,000"
      },
      "correct_answer": "C"
    },
    {
      "id": 59,
      "difficulty": "hard",
      "question": "Square perimeter=84 cm. Equilateral triangle perimeter=93 cm. Difference in sides? ⚖️",
      "options": {
        "A": "8 cm",
        "B": "9 cm",
        "C": "10 cm",
        "D": "11 cm"
      },
      "correct_answer": "C"
    },
    {
      "id": 60,
      "difficulty": "hard",
      "question": "Rectangle perimeter=240 m. Length is 50% more than width. Find dimensions. 📐",
      "options": {
        "A": "Length=70 m, Width=46.67 m",
        "B": "Length=72 m, Width=48 m",
        "C": "Length=75 m, Width=50 m",
        "D": "Length=78 m, Width=52 m"
      },
      "correct_answer": "B"
    }
  ]
}