{
  "title": "Introduction to Perimeter - Grade 3 CBSE",
  "total_questions": 100,
  "questions": [
    {"id": 1, "difficulty": "easy", "question": "What is the perimeter of a square with a side length of 3 cm?", "options": {"A": "6 cm", "B": "9 cm", "C": "12 cm", "D": "15 cm"}, "correct_answer": "C"},
    {"id": 2, "difficulty": "easy", "question": "A rectangle is 5 cm long and 2 cm wide. What is its perimeter?", "options": {"A": "10 cm", "B": "12 cm", "C": "14 cm", "D": "16 cm"}, "correct_answer": "C"},
    {"id": 3, "difficulty": "easy", "question": "What is the perimeter of a triangle where all three sides are 4 cm each?", "options": {"A": "8 cm", "B": "12 cm", "C": "16 cm", "D": "20 cm"}, "correct_answer": "B"},
    {"id": 4, "difficulty": "easy", "question": "A square has a side of 6 m. What is the distance around it?", "options": {"A": "12 m", "B": "18 m", "C": "24 m", "D": "36 m"}, "correct_answer": "C"},
    {"id": 5, "difficulty": "easy", "question": "A rectangle is 7 cm long and 3 cm wide. What is its perimeter?", "options": {"A": "17 cm", "B": "18 cm", "C": "19 cm", "D": "20 cm"}, "correct_answer": "D"},
    {"id": 6, "difficulty": "easy", "question": "What is the perimeter of a square with a side of 2 cm?", "options": {"A": "4 cm", "B": "6 cm", "C": "8 cm", "D": "10 cm"}, "correct_answer": "C"},
    {"id": 7, "difficulty": "easy", "question": "A triangle has sides of 5 cm, 6 cm, and 7 cm. What is its perimeter?", "options": {"A": "16 cm", "B": "17 cm", "C": "18 cm", "D": "19 cm"}, "correct_answer": "C"},
    {"id": 8, "difficulty": "easy", "question": "What is the perimeter of a rectangle that is 4 m long and 1 m wide?", "options": {"A": "8 m", "B": "9 m", "C": "10 m", "D": "12 m"}, "correct_answer": "C"},
    {"id": 9, "difficulty": "easy", "question": "A square field has a side of 10 m. What is the total length of its boundary?", "options": {"A": "20 m", "B": "30 m", "C": "40 m", "D": "50 m"}, "correct_answer": "C"},
    {"id": 10, "difficulty": "easy", "question": "A triangle has all sides equal to 8 cm. What is its perimeter?", "options": {"A": "16 cm", "B": "20 cm", "C": "24 cm", "D": "32 cm"}, "correct_answer": "C"},
    {"id": 11, "difficulty": "easy", "question": "What is the perimeter of a square with a side of 1 cm?", "options": {"A": "1 cm", "B": "2 cm", "C": "3 cm", "D": "4 cm"}, "correct_answer": "D"},
    {"id": 12, "difficulty": "easy", "question": "A rectangle is 6 cm long and 4 cm wide. What is its perimeter?", "options": {"A": "18 cm", "B": "20 cm", "C": "22 cm", "D": "24 cm"}, "correct_answer": "B"},
    {"id": 13, "difficulty": "easy", "question": "A triangle has sides of 3 cm, 4 cm, and 5 cm. What is its perimeter?", "options": {"A": "10 cm", "B": "11 cm", "C": "12 cm", "D": "13 cm"}, "correct_answer": "C"},
    {"id": 14, "difficulty": "easy", "question": "What is the perimeter of a square with a side of 9 cm?", "options": {"A": "18 cm", "B": "27 cm", "C": "36 cm", "D": "45 cm"}, "correct_answer": "C"},
    {"id": 15, "difficulty": "easy", "question": "A rectangle is 8 m long and 5 m wide. What is its perimeter?", "options": {"A": "21 m", "B": "25 m", "C": "26 m", "D": "30 m"}, "correct_answer": "C"},
    {"id": 16, "difficulty": "easy", "question": "What is the perimeter of an equilateral triangle with a side of 10 cm?", "options": {"A": "20 cm", "B": "25 cm", "C": "30 cm", "D": "40 cm"}, "correct_answer": "C"},
    {"id": 17, "difficulty": "easy", "question": "A square has a perimeter of 20 cm. How long is one side?", "options": {"A": "4 cm", "B": "5 cm", "C": "6 cm", "D": "7 cm"}, "correct_answer": "B"},
    {"id": 18, "difficulty": "easy", "question": "A rectangle has a perimeter of 18 cm. Its length is 5 cm. What is its width?", "options": {"A": "3 cm", "B": "4 cm", "C": "5 cm", "D": "6 cm"}, "correct_answer": "B"},
    {"id": 19, "difficulty": "easy", "question": "The perimeter of a square is 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": 20, "difficulty": "easy", "question": "A triangle has a perimeter of 15 cm. Two sides are 5 cm and 6 cm. What is the third side?", "options": {"A": "3 cm", "B": "4 cm", "C": "5 cm", "D": "6 cm"}, "correct_answer": "B"},
    {"id": 21, "difficulty": "medium", "question": "A rectangular garden is 12 m long and 8 m wide. What is the total length of fencing needed to surround it?", "options": {"A": "36 m", "B": "38 m", "C": "40 m", "D": "42 m"}, "correct_answer": "C"},
    {"id": 22, "difficulty": "medium", "question": "A square tile has a perimeter of 32 cm. What is the length of one of its sides?", "options": {"A": "6 cm", "B": "7 cm", "C": "8 cm", "D": "9 cm"}, "correct_answer": "C"},
    {"id": 23, "difficulty": "medium", "question": "A triangle has sides of length 9 cm, 12 cm, and 15 cm. What is its perimeter?", "options": {"A": "34 cm", "B": "35 cm", "C": "36 cm", "D": "37 cm"}, "correct_answer": "C"},
    {"id": 24, "difficulty": "medium", "question": "A rectangular photo frame is 15 cm long and 10 cm wide. What is its perimeter?", "options": {"A": "45 cm", "B": "50 cm", "C": "55 cm", "D": "60 cm"}, "correct_answer": "B"},
    {"id": 25, "difficulty": "medium", "question": "The perimeter of a square is 44 cm. What is its side length?", "options": {"A": "10 cm", "B": "11 cm", "C": "12 cm", "D": "13 cm"}, "correct_answer": "B"},
    {"id": 26, "difficulty": "medium", "question": "A rectangular field is 25 m long. Its perimeter is 90 m. What is its width?", "options": {"A": "15 m", "B": "18 m", "C": "20 m", "D": "22 m"}, "correct_answer": "C"},
    {"id": 27, "difficulty": "medium", "question": "An equilateral triangle has a perimeter of 27 cm. How long is each side?", "options": {"A": "8 cm", "B": "9 cm", "C": "10 cm", "D": "11 cm"}, "correct_answer": "B"},
    {"id": 28, "difficulty": "medium", "question": "A rectangle has a length of 14 cm and a width of 6 cm. What is its perimeter?", "options": {"A": "38 cm", "B": "39 cm", "C": "40 cm", "D": "42 cm"}, "correct_answer": "C"},
    {"id": 29, "difficulty": "medium", "question": "A square has a perimeter of 60 m. What is the length of one side?", "options": {"A": "12 m", "B": "13 m", "C": "14 m", "D": "15 m"}, "correct_answer": "D"},
    {"id": 30, "difficulty": "medium", "question": "A triangle has a perimeter of 30 cm. If two sides are 10 cm each, what is the length of the third side?", "options": {"A": "8 cm", "B": "9 cm", "C": "10 cm", "D": "11 cm"}, "correct_answer": "C"},
    {"id": 31, "difficulty": "medium", "question": "A notebook is 20 cm long and 15 cm wide. What is the perimeter of its cover?", "options": {"A": "60 cm", "B": "65 cm", "C": "70 cm", "D": "75 cm"}, "correct_answer": "C"},
    {"id": 32, "difficulty": "medium", "question": "The perimeter of an isosceles triangle is 35 cm. The two equal sides are 12 cm each. What is the length of the base?", "options": {"A": "9 cm", "B": "10 cm", "C": "11 cm", "D": "12 cm"}, "correct_answer": "C"},
    {"id": 33, "difficulty": "medium", "question": "A rectangular park has a length of 50 m and a perimeter of 160 m. What is its width?", "options": {"A": "25 m", "B": "30 m", "C": "35 m", "D": "40 m"}, "correct_answer": "B"},
    {"id": 34, "difficulty": "medium", "question": "A square and an equilateral triangle have the same side length of 8 cm. What is the difference in their perimeters?", "options": {"A": "0 cm", "B": "4 cm", "C": "8 cm", "D": "12 cm"}, "correct_answer": "C"},
    {"id": 35, "difficulty": "medium", "question": "A rectangle's length is twice its width. If the width is 4 cm, what is the perimeter?", "options": {"A": "16 cm", "B": "20 cm", "C": "24 cm", "D": "28 cm"}, "correct_answer": "C"},
    {"id": 36, "difficulty": "medium", "question": "A wire is bent into a square of side 11 cm. If the same wire is bent into a rectangle with length 13 cm, what would be its width?", "options": {"A": "7 cm", "B": "8 cm", "C": "9 cm", "D": "10 cm"}, "correct_answer": "C"},
    {"id": 37, "difficulty": "medium", "question": "The perimeter of a regular hexagon with side 7 cm is?", "options": {"A": "35 cm", "B": "40 cm", "C": "42 cm", "D": "49 cm"}, "correct_answer": "C"},
    {"id": 38, "difficulty": "medium", "question": "A rectangle has a perimeter of 34 cm. Its length is 10 cm. What is its area? (Think step by step, but only calculate the width for the perimeter.)", "options": {"A": "6 cm", "B": "7 cm", "C": "8 cm", "D": "9 cm"}, "correct_answer": "B"},
    {"id": 39, "difficulty": "medium", "question": "A square has a perimeter of 48 cm. A rectangle has the same perimeter. The rectangle's length is 15 cm. What is its width?", "options": {"A": "7 cm", "B": "8 cm", "C": "9 cm", "D": "10 cm"}, "correct_answer": "C"},
    {"id": 40, "difficulty": "medium", "question": "A triangle has sides of (x+2) cm, (x+4) cm, and (x+6) cm. Its perimeter is 30 cm. What is the value of x?", "options": {"A": "4", "B": "5", "C": "6", "D": "7"}, "correct_answer": "C"},
    {"id": 41, "difficulty": "medium", "question": "A rectangular swimming pool is 20 m long. Its perimeter is 70 m. How wide is the pool?", "options": {"A": "10 m", "B": "12 m", "C": "15 m", "D": "18 m"}, "correct_answer": "C"},
    {"id": 42, "difficulty": "medium", "question": "The perimeter of a square is 1 meter. What is the length of its side in centimeters?", "options": {"A": "20 cm", "B": "25 cm", "C": "30 cm", "D": "35 cm"}, "correct_answer": "B"},
    {"id": 43, "difficulty": "medium", "question": "A picture frame is square-shaped. If one side is 25 cm, what is the total length of the frame's border?", "options": {"A": "75 cm", "B": "90 cm", "C": "100 cm", "D": "125 cm"}, "correct_answer": "C"},
    {"id": 44, "difficulty": "medium", "question": "A rectangle has a length of 18 cm and a perimeter of 56 cm. What is the width of the rectangle?", "options": {"A": "8 cm", "B": "9 cm", "C": "10 cm", "D": "11 cm"}, "correct_answer": "C"},
    {"id": 45, "difficulty": "medium", "question": "An equilateral triangle has a perimeter of 45 cm. What is the length of each side?", "options": {"A": "12 cm", "B": "13 cm", "C": "14 cm", "D": "15 cm"}, "correct_answer": "D"},
    {"id": 46, "difficulty": "medium", "question": "A square field has a perimeter of 120 m. What is the length of one side?", "options": {"A": "25 m", "B": "30 m", "C": "35 m", "D": "40 m"}, "correct_answer": "B"},
    {"id": 47, "difficulty": "medium", "question": "A triangle has a perimeter of 24 cm. All sides are equal. What is the length of one side?", "options": {"A": "6 cm", "B": "7 cm", "C": "8 cm", "D": "9 cm"}, "correct_answer": "C"},
    {"id": 48, "difficulty": "medium", "question": "A rectangular whiteboard is 3 m long and 2 m wide. What is its perimeter in centimeters? (1 m = 100 cm)", "options": {"A": "500 cm", "B": "1000 cm", "C": "1500 cm", "D": "2000 cm"}, "correct_answer": "B"},
    {"id": 49, "difficulty": "medium", "question": "The perimeter of a rectangle is 40 cm. If the width is 8 cm, what is the length?", "options": {"A": "10 cm", "B": "11 cm", "C": "12 cm", "D": "13 cm"}, "correct_answer": "C"},
    {"id": 50, "difficulty": "medium", "question": "A square and a rectangle have the same perimeter. The square has a side of 10 cm. The rectangle's length is 12 cm. What is the rectangle's width?", "options": {"A": "6 cm", "B": "7 cm", "C": "8 cm", "D": "9 cm"}, "correct_answer": "C"},
    {"id": 51, "difficulty": "medium", "question": "A regular pentagon has a side length of 5 cm. What is its perimeter?", "options": {"A": "20 cm", "B": "22 cm", "C": "25 cm", "D": "30 cm"}, "correct_answer": "C"},
    {"id": 52, "difficulty": "medium", "question": "A rectangle's length is 5 cm more than its width. If the width is 7 cm, what is the perimeter?", "options": {"A": "32 cm", "B": "35 cm", "C": "38 cm", "D": "40 cm"}, "correct_answer": "C"},
    {"id": 53, "difficulty": "medium", "question": "A triangle has sides of 8.5 cm, 6.5 cm, and 9 cm. What is its perimeter?", "options": {"A": "23 cm", "B": "24 cm", "C": "25 cm", "D": "26 cm"}, "correct_answer": "B"},
    {"id": 54, "difficulty": "medium", "question": "A square has a perimeter of 80 cm. If its side is reduced by 5 cm, what is the new perimeter?", "options": {"A": "50 cm", "B": "60 cm", "C": "70 cm", "D": "75 cm"}, "correct_answer": "B"},
    {"id": 55, "difficulty": "medium", "question": "A rectangular carpet has a length of 4 m and a perimeter of 14 m. What is its width?", "options": {"A": "2 m", "B": "2.5 m", "C": "3 m", "D": "3.5 m"}, "correct_answer": "C"},
    {"id": 56, "difficulty": "medium", "question": "The perimeter of an isosceles triangle is 29 cm. The base is 9 cm. What is the length of each equal side?", "options": {"A": "8 cm", "B": "9 cm", "C": "10 cm", "D": "11 cm"}, "correct_answer": "C"},
    {"id": 57, "difficulty": "medium", "question": "A square plot of land has a perimeter of 200 m. What is the length of one side?", "options": {"A": "40 m", "B": "45 m", "C": "50 m", "D": "55 m"}, "correct_answer": "C"},
    {"id": 58, "difficulty": "medium", "question": "A rectangle has a perimeter of 30 cm and a length of 9 cm. What is its width?", "options": {"A": "5 cm", "B": "6 cm", "C": "7 cm", "D": "8 cm"}, "correct_answer": "B"},
    {"id": 59, "difficulty": "medium", "question": "A triangle has a perimeter of 21 cm. The sides are in the ratio 2:3:4. What is the length of the longest side?", "options": {"A": "6 cm", "B": "7 cm", "C": "8 cm", "D": "9 cm"}, "correct_answer": "D"},
    {"id": 60, "difficulty": "medium", "question": "A wire of 60 cm is bent into a rectangle with a length of 18 cm. What is its width?", "options": {"A": "10 cm", "B": "11 cm", "C": "12 cm", "D": "13 cm"}, "correct_answer": "C"},
    {"id": 61, "difficulty": "hard", "question": "A rectangular garden has a length that is 3 times its width. If the perimeter is 64 m, what is the length of the garden?", "options": {"A": "16 m", "B": "20 m", "C": "24 m", "D": "28 m"}, "correct_answer": "C"},
    {"id": 62, "difficulty": "hard", "question": "A square and an equilateral triangle have the same perimeter. The square's side is 15 cm. What is the side of the triangle?", "options": {"A": "18 cm", "B": "20 cm", "C": "22 cm", "D": "24 cm"}, "correct_answer": "B"},
    {"id": 63, "difficulty": "hard", "question": "The perimeter of a rectangle is 54 cm. The length is 5 cm more than the width. What is the area of the rectangle? (First find length and width using perimeter.)", "options": {"A": "11 cm and 16 cm", "B": "12 cm and 17 cm", "C": "13 cm and 18 cm", "D": "14 cm and 19 cm"}, "correct_answer": "A"},
    {"id": 64, "difficulty": "hard", "question": "A field is in the shape of a rectangle with a length of 40 m and a width of 30 m. If you walk around it 3 times, what total distance will you cover?", "options": {"A": "140 m", "B": "280 m", "C": "420 m", "D": "560 m"}, "correct_answer": "C"},
    {"id": 65, "difficulty": "hard", "question": "A piece of string is 100 cm long. It is bent to form a square. What is the area of the square? (First find the side length from the perimeter.)", "options": {"A": "525 sq cm", "B": "600 sq cm", "C": "625 sq cm", "D": "700 sq cm"}, "correct_answer": "C"},
    {"id": 66, "difficulty": "hard", "question": "The perimeter of an isosceles triangle is 50 cm. The base is 14 cm. What is the length of each of the other two sides?", "options": {"A": "16 cm", "B": "17 cm", "C": "18 cm", "D": "19 cm"}, "correct_answer": "C"},
    {"id": 67, "difficulty": "hard", "question": "A rectangular sheet of paper is 28 cm long. Its perimeter is 82 cm. What is its width?", "options": {"A": "12 cm", "B": "13 cm", "C": "14 cm", "D": "15 cm"}, "correct_answer": "B"},
    {"id": 68, "difficulty": "hard", "question": "A square has a perimeter of 48 cm. A rectangle has the same perimeter. If the rectangle's length is twice its width, what is the rectangle's length?", "options": {"A": "12 cm", "B": "14 cm", "C": "16 cm", "D": "18 cm"}, "correct_answer": "C"},
    {"id": 69, "difficulty": "hard", "question": "A triangle has a perimeter of 39 cm. The second side is twice as long as the first side. The third side is 3 cm longer than the first side. What is the length of the longest side?", "options": {"A": "10 cm", "B": "12 cm", "C": "15 cm", "D": "18 cm"}, "correct_answer": "D"},
    {"id": 70, "difficulty": "hard", "question": "A farmer has a rectangular field with a perimeter of 120 m. The length is 10 m more than the width. What is the length of the field?", "options": {"A": "30 m", "B": "35 m", "C": "40 m", "D": "45 m"}, "correct_answer": "B"},
    {"id": 71, "difficulty": "hard", "question": "A regular hexagon has a perimeter of 72 cm. What is the length of each side?", "options": {"A": "10 cm", "B": "11 cm", "C": "12 cm", "D": "13 cm"}, "correct_answer": "C"},
    {"id": 72, "difficulty": "hard", "question": "The perimeter of a rectangle is 76 cm. Its length is 22 cm. What is its area? (First find the width.)", "options": {"A": "352 sq cm", "B": "364 sq cm", "C": "372 sq cm", "D": "384 sq cm"}, "correct_answer": "A"},
    {"id": 73, "difficulty": "hard", "question": "A square of side 8 cm has the same perimeter as a rectangle of length 10 cm. What is the width of the rectangle?", "options": {"A": "4 cm", "B": "5 cm", "C": "6 cm", "D": "7 cm"}, "correct_answer": "C"},
    {"id": 74, "difficulty": "hard", "question": "A triangle has sides of (2x) cm, (3x) cm, and (4x) cm. Its perimeter is 108 cm. What is the length of the shortest side?", "options": {"A": "12 cm", "B": "18 cm", "C": "24 cm", "D": "36 cm"}, "correct_answer": "C"},
    {"id": 75, "difficulty": "hard", "question": "A playground is 35 m long and 25 m wide. If a child runs 4 laps around it, how many meters does he run?", "options": {"A": "120 m", "B": "240 m", "C": "360 m", "D": "480 m"}, "correct_answer": "D"},
    {"id": 76, "difficulty": "hard", "question": "A rectangle has a perimeter of 42 cm. The difference between its length and width is 3 cm. What is the length of the rectangle?", "options": {"A": "10 cm", "B": "11 cm", "C": "12 cm", "D": "13 cm"}, "correct_answer": "C"},
    {"id": 77, "difficulty": "hard", "question": "A square has an area of 81 sq cm. What is its perimeter?", "options": {"A": "27 cm", "B": "32 cm", "C": "36 cm", "D": "40 cm"}, "correct_answer": "C"},
    {"id": 78, "difficulty": "hard", "question": "An equilateral triangle has the same perimeter as a square of side 9 cm. What is the side of the triangle?", "options": {"A": "10 cm", "B": "11 cm", "C": "12 cm", "D": "13 cm"}, "correct_answer": "C"},
    {"id": 79, "difficulty": "hard", "question": "A rectangle is 18 cm long. Its perimeter is 56 cm. A square has the same perimeter. What is the side of the square?", "options": {"A": "12 cm", "B": "13 cm", "C": "14 cm", "D": "15 cm"}, "correct_answer": "C"},
    {"id": 80, "difficulty": "hard", "question": "The perimeter of a rectangular board is 180 cm. If its length is 50 cm, what is the width of the board?", "options": {"A": "35 cm", "B": "38 cm", "C": "40 cm", "D": "45 cm"}, "correct_answer": "C"},
    {"id": 81, "difficulty": "hard", "question": "A rectangular field is 45 m long and 35 m wide. What is the total cost of fencing it at Rs. 10 per meter?", "options": {"A": "Rs. 1400", "B": "Rs. 1500", "C": "Rs. 1600", "D": "Rs. 1800"}, "correct_answer": "C"},
    {"id": 82, "difficulty": "hard", "question": "A square has a perimeter of 84 cm. What is the length of its diagonal? (This is a challenge, think about side length first.)", "options": {"A": "21√2 cm", "B": "28 cm", "C": "28√2 cm", "D": "30 cm"}, "correct_answer": "A"},
    {"id": 83, "difficulty": "hard", "question": "The perimeter of a triangle is 48 cm. The sides are in the ratio 3:4:5. What is the length of the smallest side?", "options": {"A": "10 cm", "B": "11 cm", "C": "12 cm", "D": "13 cm"}, "correct_answer": "C"},
    {"id": 84, "difficulty": "hard", "question": "A rectangle has a length of 12 cm and a diagonal of 13 cm. What is its perimeter? (Hint: Use Pythagorean theorem to find width.)", "options": {"A": "30 cm", "B": "32 cm", "C": "34 cm", "D": "36 cm"}, "correct_answer": "C"},
    {"id": 85, "difficulty": "hard", "question": "A wire is bent into a rectangle of length 16 cm and width 10 cm. If the same wire is bent into a square, what will be the area of that square?", "options": {"A": "169 sq cm", "B": "196 sq cm", "C": "225 sq cm", "D": "256 sq cm"}, "correct_answer": "A"},
    {"id": 86, "difficulty": "hard", "question": "A regular octagon has a side length of 8 cm. What is its perimeter?", "options": {"A": "48 cm", "B": "56 cm", "C": "64 cm", "D": "72 cm"}, "correct_answer": "C"},
    {"id": 87, "difficulty": "hard", "question": "The perimeter of a rectangular swimming pool is 90 m. The length is 25 m. What is the area of the pool?", "options": {"A": "250 sq m", "B": "400 sq m", "C": "500 sq m", "D": "600 sq m"}, "correct_answer": "C"},
    {"id": 88, "difficulty": "hard", "question": "A square has an area of 144 sq cm. What is its perimeter?", "options": {"A": "40 cm", "B": "44 cm", "C": "48 cm", "D": "52 cm"}, "correct_answer": "C"},
    {"id": 89, "difficulty": "hard", "question": "A rectangle has a perimeter of 40 cm. A square has the same perimeter. What is the difference in their areas if the rectangle's sides are 12 cm and 8 cm?", "options": {"A": "4 sq cm", "B": "6 sq cm", "C": "8 sq cm", "D": "10 sq cm"}, "correct_answer": "A"},
    {"id": 90, "difficulty": "hard", "question": "A triangle has a perimeter of 45 cm. One side is 15 cm. The other two sides are equal. What is the length of each of the equal sides?", "options": {"A": "12 cm", "B": "13 cm", "C": "14 cm", "D": "15 cm"}, "correct_answer": "D"},
    {"id": 91, "difficulty": "hard", "question": "A rectangular park is 60 m long. Its perimeter is 200 m. What is the area of the park?", "options": {"A": "1200 sq m", "B": "1800 sq m", "C": "2400 sq m", "D": "3000 sq m"}, "correct_answer": "C"},
    {"id": 92, "difficulty": "hard", "question": "A square has a perimeter of 52 cm. What is the length of each side?", "options": {"A": "12 cm", "B": "12.5 cm", "C": "13 cm", "D": "13.5 cm"}, "correct_answer": "C"},
    {"id": 93, "difficulty": "hard", "question": "A rectangle has a length of 20 cm and a perimeter of 70 cm. What is its width?", "options": {"A": "10 cm", "B": "12 cm", "C": "14 cm", "D": "15 cm"}, "correct_answer": "D"},
    {"id": 94, "difficulty": "hard", "question": "The perimeter of an equilateral triangle is 1.5 m. What is the length of its side in cm?", "options": {"A": "40 cm", "B": "45 cm", "C": "50 cm", "D": "55 cm"}, "correct_answer": "C"},
    {"id": 95, "difficulty": "hard", "question": "A rectangle is 22 m long and 18 m wide. A square has the same perimeter. What is the side of the square?", "options": {"A": "18 m", "B": "19 m", "C": "20 m", "D": "21 m"}, "correct_answer": "C"},
    {"id": 96, "difficulty": "hard", "question": "A picture frame has a perimeter of 120 cm. Its width is 20 cm. What is its length?", "options": {"A": "30 cm", "B": "35 cm", "C": "40 cm", "D": "45 cm"}, "correct_answer": "C"},
    {"id": 97, "difficulty": "hard", "question": "A rope of 1 km is used to fence a square field. What is the length of one side of the field in meters?", "options": {"A": "200 m", "B": "225 m", "C": "250 m", "D": "275 m"}, "correct_answer": "C"},
    {"id": 98, "difficulty": "hard", "question": "A rectangle has a perimeter of 56 cm. Its length is 16 cm. What is the area of the rectangle?", "options": {"A": "160 sq cm", "B": "176 sq cm", "C": "192 sq cm", "D": "208 sq cm"}, "correct_answer": "C"},
    {"id": 99, "difficulty": "hard", "question": "A triangle has sides of 11 cm, 13 cm, and 18 cm. What is its perimeter?", "options": {"A": "40 cm", "B": "41 cm", "C": "42 cm", "D": "43 cm"}, "correct_answer": "C"},
    {"id": 100, "difficulty": "hard", "question": "A square has an area of 625 sq cm. What is its perimeter?", "options": {"A": "80 cm", "B": "90 cm", "C": "100 cm", "D": "120 cm"}, "correct_answer": "C"}
  ]
}