{
  "title": "Area of Trapezium (Mensuration) - Grade 7 ICSE",
  "total_questions": 60,
  "questions": [
    {
      "id": 1,
      "difficulty": "easy",
      "question": "Find area of trapezium: parallel sides 6cm, 4cm; height 5cm: 📐",
      "options": { "A": "23cm²", "B": "24cm²", "C": "25cm²", "D": "26cm²" },
      "correct_answer": "C"
    },
    {
      "id": 2,
      "difficulty": "easy",
      "question": "Area of trapezium: a=8cm, b=5cm, h=4cm: 🟦",
      "options": { "A": "25cm²", "B": "26cm²", "C": "27cm²", "D": "28cm²" },
      "correct_answer": "B"
    },
    {
      "id": 3,
      "difficulty": "easy",
      "question": "Find area: parallel sides 10cm, 7cm; height 6cm: 📏",
      "options": { "A": "50cm²", "B": "51cm²", "C": "52cm²", "D": "53cm²" },
      "correct_answer": "B"
    },
    {
      "id": 4,
      "difficulty": "easy",
      "question": "Area of trapezium: a=9cm, b=6cm, h=3cm: 🎯",
      "options": {
        "A": "21.5cm²",
        "B": "22.5cm²",
        "C": "23.5cm²",
        "D": "24.5cm²"
      },
      "correct_answer": "B"
    },
    {
      "id": 5,
      "difficulty": "easy",
      "question": "Find area: parallel sides 12cm, 8cm; height 5cm: 🔳",
      "options": { "A": "48cm²", "B": "49cm²", "C": "50cm²", "D": "51cm²" },
      "correct_answer": "C"
    },
    {
      "id": 6,
      "difficulty": "easy",
      "question": "Area of trapezium: a=7cm, b=3cm, h=4cm: 🧩",
      "options": { "A": "19cm²", "B": "20cm²", "C": "21cm²", "D": "22cm²" },
      "correct_answer": "B"
    },
    {
      "id": 7,
      "difficulty": "easy",
      "question": "Find area: parallel sides 15cm, 10cm; height 8cm: 📊",
      "options": { "A": "98cm²", "B": "99cm²", "C": "100cm²", "D": "101cm²" },
      "correct_answer": "C"
    },
    {
      "id": 8,
      "difficulty": "easy",
      "question": "Area of trapezium: a=11cm, b=7cm, h=6cm: ⚡",
      "options": { "A": "53cm²", "B": "54cm²", "C": "55cm²", "D": "56cm²" },
      "correct_answer": "B"
    },
    {
      "id": 9,
      "difficulty": "easy",
      "question": "Find area: parallel sides 14cm, 9cm; height 7cm: 🎲",
      "options": {
        "A": "79.5cm²",
        "B": "80.5cm²",
        "C": "81.5cm²",
        "D": "82.5cm²"
      },
      "correct_answer": "B"
    },
    {
      "id": 10,
      "difficulty": "easy",
      "question": "Area of trapezium: a=13cm, b=8cm, h=5cm: 🔄",
      "options": {
        "A": "51.5cm²",
        "B": "52.5cm²",
        "C": "53.5cm²",
        "D": "54.5cm²"
      },
      "correct_answer": "B"
    },
    {
      "id": 11,
      "difficulty": "easy",
      "question": "Find area: parallel sides 18cm, 12cm; height 9cm: 🏆",
      "options": { "A": "133cm²", "B": "134cm²", "C": "135cm²", "D": "136cm²" },
      "correct_answer": "C"
    },
    {
      "id": 12,
      "difficulty": "easy",
      "question": "Area of trapezium: a=16cm, b=11cm, h=8cm: 🟩",
      "options": { "A": "107cm²", "B": "108cm²", "C": "109cm²", "D": "110cm²" },
      "correct_answer": "B"
    },
    {
      "id": 13,
      "difficulty": "easy",
      "question": "Find area: parallel sides 20cm, 15cm; height 10cm: 📐",
      "options": { "A": "173cm²", "B": "174cm²", "C": "175cm²", "D": "176cm²" },
      "correct_answer": "C"
    },
    {
      "id": 14,
      "difficulty": "easy",
      "question": "Area of trapezium: a=22cm, b=18cm, h=12cm: 🔺",
      "options": { "A": "238cm²", "B": "239cm²", "C": "240cm²", "D": "241cm²" },
      "correct_answer": "C"
    },
    {
      "id": 15,
      "difficulty": "easy",
      "question": "Find area: parallel sides 25cm, 20cm; height 15cm: 🎪",
      "options": {
        "A": "336cm²",
        "B": "337.5cm²",
        "C": "338cm²",
        "D": "339cm²"
      },
      "correct_answer": "B"
    },
    {
      "id": 16,
      "difficulty": "easy",
      "question": "Area of trapezium: a=19cm, b=14cm, h=7cm: ⭐",
      "options": {
        "A": "114.5cm²",
        "B": "115.5cm²",
        "C": "116.5cm²",
        "D": "117.5cm²"
      },
      "correct_answer": "B"
    },
    {
      "id": 17,
      "difficulty": "easy",
      "question": "Find area: parallel sides 30cm, 25cm; height 20cm: 🔳",
      "options": { "A": "548cm²", "B": "549cm²", "C": "550cm²", "D": "551cm²" },
      "correct_answer": "C"
    },
    {
      "id": 18,
      "difficulty": "easy",
      "question": "Area of trapezium: a=24cm, b=19cm, h=11cm: 🧮",
      "options": {
        "A": "235.5cm²",
        "B": "236.5cm²",
        "C": "237.5cm²",
        "D": "238.5cm²"
      },
      "correct_answer": "B"
    },
    {
      "id": 19,
      "difficulty": "easy",
      "question": "Find area: parallel sides 28cm, 22cm; height 16cm: 📏",
      "options": { "A": "398cm²", "B": "399cm²", "C": "400cm²", "D": "401cm²" },
      "correct_answer": "C"
    },
    {
      "id": 20,
      "difficulty": "easy",
      "question": "Area of trapezium: a=26cm, b=21cm, h=14cm: 🎯",
      "options": {
        "A": "328cm²",
        "B": "329cm²",
        "C": "330cm²",
        "D": "331cm²"
      },
      "correct_answer": "B"
    },
    {
      "id": 21,
      "difficulty": "medium",
      "question": "Find height of trapezium: area=84cm², a=10cm, b=4cm: 📐",
      "options": { "A": "10cm", "B": "11cm", "C": "12cm", "D": "13cm" },
      "correct_answer": "C"
    },
    {
      "id": 22,
      "difficulty": "medium",
      "question": "Find parallel side 'b': area=95cm², a=12cm, h=10cm: 🔍",
      "options": { "A": "6cm", "B": "7cm", "C": "8cm", "D": "9cm" },
      "correct_answer": "B"
    },
    {
      "id": 23,
      "difficulty": "medium",
      "question": "Find height: area=126cm², a=15cm, b=9cm: 📏",
      "options": { "A": "9cm", "B": "10cm", "C": "10.5cm", "D": "11cm" },
      "correct_answer": "C"
    },
    {
      "id": 24,
      "difficulty": "medium",
      "question": "Find parallel side 'a': area=108cm², b=8cm, h=9cm: 🧩",
      "options": { "A": "14cm", "B": "15cm", "C": "16cm", "D": "17cm" },
      "correct_answer": "C"
    },
    {
      "id": 25,
      "difficulty": "medium",
      "question": "Find height: area=144cm², a=18cm, b=12cm: ⚡",
      "options": { "A": "8.5cm", "B": "9cm", "C": "9.5cm", "D": "9.6cm" },
      "correct_answer": "D"
    },
    {
      "id": 26,
      "difficulty": "medium",
      "question": "Find 'b': area=165cm², a=20cm, h=11cm: 🔄",
      "options": { "A": "9cm", "B": "10cm", "C": "11cm", "D": "12cm" },
      "correct_answer": "B"
    },
    {
      "id": 27,
      "difficulty": "medium",
      "question": "Find height: area=196cm², a=22cm, b=16cm: 🎲",
      "options": { "A": "9.8cm", "B": "10cm", "C": "10.2cm", "D": "10.32cm" },
      "correct_answer": "D"
    },
    {
      "id": 28,
      "difficulty": "medium",
      "question": "Find 'a': area=225cm², b=15cm, h=12cm: 📊",
      "options": { "A": "21cm", "B": "22cm", "C": "22.5cm", "D": "23cm" },
      "correct_answer": "C"
    },
    {
      "id": 29,
      "difficulty": "medium",
      "question": "Find height: area=256cm², a=25cm, b=19cm: 🟦",
      "options": { "A": "10.5cm", "B": "11cm", "C": "11.5cm", "D": "11.64cm" },
      "correct_answer": "D"
    },
    {
      "id": 30,
      "difficulty": "medium",
      "question": "Find 'b': area=289cm², a=28cm, h=14cm: 🎯",
      "options": { "A": "12cm", "B": "13cm", "C": "13.3cm", "D": "14cm" },
      "correct_answer": "C"
    },
    {
      "id": 31,
      "difficulty": "medium",
      "question": "Find height: area=324cm², a=30cm, b=24cm: 🔳",
      "options": { "A": "11cm", "B": "11.5cm", "C": "12cm", "D": "12.1cm" },
      "correct_answer": "C"
    },
    {
      "id": 32,
      "difficulty": "medium",
      "question": "Find 'a': area=361cm², b=19cm, h=15cm: ⭐",
      "options": { "A": "28cm", "B": "28.5cm", "C": "29cm", "D": "29.1cm" },
      "correct_answer": "D"
    },
    {
      "id": 33,
      "difficulty": "medium",
      "question": "Find height: area=400cm², a=35cm, b=25cm: 🏆",
      "options": { "A": "12.5cm", "B": "13cm", "C": "13.33cm", "D": "14cm" },
      "correct_answer": "C"
    },
    {
      "id": 34,
      "difficulty": "medium",
      "question": "Find 'b': area=441cm², a=40cm, h=16cm: 🧮",
      "options": { "A": "14cm", "B": "14.5cm", "C": "15cm", "D": "15.13cm" },
      "correct_answer": "D"
    },
    {
      "id": 35,
      "difficulty": "medium",
      "question": "Find height: area=484cm², a=42cm, b=34cm: 📐",
      "options": { "A": "12.5cm", "B": "12.7cm", "C": "13cm", "D": "13.2cm" },
      "correct_answer": "B"
    },
    {
      "id": 36,
      "difficulty": "medium",
      "question": "Find 'a': area=529cm², b=25cm, h=17cm: 🔍",
      "options": { "A": "36cm", "B": "36.5cm", "C": "37cm", "D": "37.2cm" },
      "correct_answer": "D"
    },
    {
      "id": 37,
      "difficulty": "medium",
      "question": "Find height: area=576cm², a=45cm, b=39cm: 📏",
      "options": { "A": "13.5cm", "B": "13.7cm", "C": "14cm", "D": "14.2cm" },
      "correct_answer": "B"
    },
    {
      "id": 38,
      "difficulty": "medium",
      "question": "Find 'b': area=625cm², a=48cm, h=18cm: 🧩",
      "options": { "A": "20cm", "B": "20.5cm", "C": "21cm", "D": "21.4cm" },
      "correct_answer": "D"
    },
    {
      "id": 39,
      "difficulty": "medium",
      "question": "Find height: area=676cm², a=50cm, b=42cm: ⚡",
      "options": { "A": "14.5cm", "B": "14.7cm", "C": "15cm", "D": "15.2cm" },
      "correct_answer": "B"
    },
    {
      "id": 40,
      "difficulty": "medium",
      "question": "Find 'a': area=729cm², b=35cm, h=19cm: 🔄",
      "options": { "A": "41cm", "B": "41.5cm", "C": "42cm", "D": "41.7cm" },
      "correct_answer": "D"
    },
    {
      "id": 41,
      "difficulty": "hard",
      "question": "Find area of isosceles trapezium: parallel sides 20cm, 12cm; non-parallel sides 8cm each: 🔺",
      "options": {
        "A": "110.4cm²",
        "B": "110.6cm²",
        "C": "110.85cm²",
        "D": "111cm²"
      },
      "correct_answer": "C"
    },
    {
      "id": 42,
      "difficulty": "hard",
      "question": "Area of trapezium: a=24cm, b=16cm, height found using Pythagorean triple: 📊",
      "options": { "A": "240cm²", "B": "241cm²", "C": "242cm²", "D": "243cm²" },
      "correct_answer": "A"
    },
    {
      "id": 43,
      "difficulty": "hard",
      "question": "Find height using area=150cm² and sides 18cm, 12cm with diagonal 13cm: 🎯",
      "options": { "A": "9cm", "B": "9.5cm", "C": "10cm", "D": "10.5cm" },
      "correct_answer": "C"
    },
    {
      "id": 44,
      "difficulty": "hard",
      "question": "Area of trapezium with parallel sides 30cm, 22cm and non-parallel sides 10cm, 10cm: ⚡",
      "options": { "A": "247cm²", "B": "248cm²", "C": "249cm²", "D": "250cm²" },
      "correct_answer": "B"
    },
    {
      "id": 45,
      "difficulty": "hard",
      "question": "Find missing parallel side if area=210cm², one side=25cm, height=12cm: 🔍",
      "options": { "A": "9cm", "B": "10cm", "C": "11cm", "D": "12cm" },
      "correct_answer": "B"
    },
    {
      "id": 46,
      "difficulty": "hard",
      "question": "Area of trapezium where parallel sides are in ratio 3:2, height 15cm, area=375cm²: 📐",
      "options": {
        "A": "30cm & 20cm",
        "B": "31cm & 20cm",
        "C": "30cm & 21cm",
        "D": "31cm & 21cm"
      },
      "correct_answer": "A"
    },
    {
      "id": 47,
      "difficulty": "hard",
      "question": "Find area: parallel sides (x+8)cm, (x+2)cm, height 10cm, area=170cm²: 🧩",
      "options": { "A": "x=8", "B": "x=9", "C": "x=10", "D": "x=11" },
      "correct_answer": "A"
    },
    {
      "id": 48,
      "difficulty": "hard",
      "question": "Area of trapezium with diagonal 17cm, height 15cm, and one parallel side 14cm: 🔳",
      "options": { "A": "229cm²", "B": "230cm²", "C": "231cm²", "D": "232cm²" },
      "correct_answer": "C"
    },
    {
      "id": 49,
      "difficulty": "hard",
      "question": "Find area: parallel sides in ratio 5:3, height 18cm, difference between sides=12cm: ⭐",
      "options": { "A": "860cm²", "B": "861cm²", "C": "862cm²", "D": "864cm²" },
      "correct_answer": "D"
    },
    {
      "id": 50,
      "difficulty": "hard",
      "question": "Area of trapezium where sum of parallel sides=50cm, height=14cm: 🏆",
      "options": { "A": "348cm²", "B": "349cm²", "C": "350cm²", "D": "351cm²" },
      "correct_answer": "C"
    },
    {
      "id": 51,
      "difficulty": "hard",
      "question": "Find missing side if area=294cm², height=12cm, one parallel side=25cm: 📏",
      "options": { "A": "23cm", "B": "24cm", "C": "25cm", "D": "26cm" },
      "correct_answer": "B"
    },
    {
      "id": 52,
      "difficulty": "hard",
      "question": "Area of trapezium with non-parallel sides equal to 13cm each, parallel sides 24cm, 10cm: 🔺",
      "options": { "A": "203cm²", "B": "204cm²", "C": "205cm²", "D": "206cm²" },
      "correct_answer": "B"
    },
    {
      "id": 53,
      "difficulty": "hard",
      "question": "Find height using area=336cm² and parallel sides 28cm, 20cm with perimeter 80cm: 🎲",
      "options": { "A": "13cm", "B": "13.5cm", "C": "14cm", "D": "14.5cm" },
      "correct_answer": "C"
    },
    {
      "id": 54,
      "difficulty": "hard",
      "question": "Area of trapezium where parallel sides are (3x)cm and (2x)cm, height=16cm, area=400cm²: 📊",
      "options": {
        "A": "30cm & 20cm",
        "B": "31cm & 20cm",
        "C": "30cm & 21cm",
        "D": "31cm & 21cm"
      },
      "correct_answer": "A"
    },
    {
      "id": 55,
      "difficulty": "hard",
      "question": "Find area: parallel sides 35cm, 29cm, non-parallel sides 10cm, 10cm: ⚡",
      "options": { "A": "254cm²", "B": "255cm²", "C": "256cm²", "D": "257cm²" },
      "correct_answer": "C"
    },
    {
      "id": 56,
      "difficulty": "hard",
      "question": "Area of trapezium with diagonal 25cm, height 20cm, one parallel side 21cm: 🔳",
      "options": { "A": "418cm²", "B": "419cm²", "C": "420cm²", "D": "421cm²" },
      "correct_answer": "C"
    },
    {
      "id": 57,
      "difficulty": "hard",
      "question": "Find missing parallel side: area=460cm², height=20cm, sum of parallel sides=46cm: 🧮",
      "options": {
        "A": "23cm each",
        "B": "24cm & 22cm",
        "C": "25cm & 21cm",
        "D": "26cm & 20cm"
      },
      "correct_answer": "B"
    },
    {
      "id": 58,
      "difficulty": "hard",
      "question": "Area of trapezium where parallel sides differ by 8cm, height=15cm, area=345cm²: 📐",
      "options": {
        "A": "27cm & 19cm",
        "B": "28cm & 20cm",
        "C": "29cm & 21cm",
        "D": "30cm & 22cm"
      },
      "correct_answer": "A"
    },
    {
      "id": 59,
      "difficulty": "hard",
      "question": "Find area: parallel sides 40cm, 32cm, non-parallel sides 17cm each: 🔺",
      "options": { "A": "560cm²", "B": "561cm²", "C": "562cm²", "D": "563cm²" },
      "correct_answer": "B"
    },
    {
      "id": 60,
      "difficulty": "hard",
      "question": "Area of trapezium with sum of parallel sides=60cm, height=18cm, diagonal=30cm: 🎯",
      "options": { "A": "538cm²", "B": "539cm²", "C": "540cm²", "D": "541cm²" },
      "correct_answer": "C"
    }
  ]
}