← Mensuration: trapezium, cuboid and cube lesson New set →

Class 8 Maths Worksheet: Mensuration

Maths worksheets lesson 62: Mensuration: trapezium, cuboid and cube · Set 257 · 40 sums
TalentJR

The method (Flat parts add up): Trapezium: area = ½ × (a + b) × h. Rhombus: area = ½ × d₁ × d₂. Cuboid: total surface area = 2(lb + bh + hl); four walls = 2h(l + b). Cube: total surface area = 6a²; edge = √(surface area ÷ 6). Missing height of a trapezium = 2 × area ÷ (a + b).

NameDateTime takenScore ___ / 40
  1. 1.A trapezium has parallel sides of 12 cm and 23 cm, and the distance between them is 4 cm. What is its area (in square cm)?
  2. 2.A trapezium has parallel sides of 6 cm and 17 cm, and the distance between them is 8 cm. What is its area (in square cm)?
  3. 3.The total surface area of a cube is 24 square cm. How long is each edge (in cm)?
  4. 4.Each edge of a cube is 6 cm. What is its total surface area (in square cm)?
  5. 5.A trapezium has an area of 246 square cm. Its parallel sides are 22 cm and 19 cm. What is the distance between them (in cm)?
  6. 6.Each edge of a cube is 11 cm. What is its total surface area (in square cm)?
  7. 7.A cuboid is 4 cm long, 7 cm wide and 2 cm high. What is its total surface area (in square cm)?
  8. 8.A room is 9 m long, 3 m wide and 5 m high. What is the area of its four walls (in square m)?
  9. 9.A trapezium has parallel sides of 4 cm and 29 cm, and the distance between them is 10 cm. What is its area (in square cm)?
  10. 10.The diagonals of a rhombus are 10 cm and 27 cm. What is its area (in square cm)?
  11. 11.Each edge of a cube is 12 cm. What is its total surface area (in square cm)?
  12. 12.A trapezium has an area of 72 square cm. Its parallel sides are 10 cm and 26 cm. What is the distance between them (in cm)?
  13. 13.A cuboid is 14 cm long, 11 cm wide and 7 cm high. What is its total surface area (in square cm)?
  14. 14.A trapezium has an area of 430 square cm. Its parallel sides are 19 cm and 24 cm. What is the distance between them (in cm)?
  15. 15.The diagonals of a rhombus are 18 cm and 14 cm. What is its area (in square cm)?
  16. 16.A trapezium has an area of 88 square cm. Its parallel sides are 18 cm and 26 cm. What is the distance between them (in cm)?
  17. 17.A room is 10 m long, 3 m wide and 5 m high. What is the area of its four walls (in square m)?
  18. 18.A trapezium has an area of 135 square cm. Its parallel sides are 10 cm and 17 cm. What is the distance between them (in cm)?
  19. 19.A room is 5 m long, 3 m wide and 5 m high. What is the area of its four walls (in square m)?
  20. 20.A trapezium has an area of 176 square cm. Its parallel sides are 24 cm and 8 cm. What is the distance between them (in cm)?
  21. 21.A room is 9 m long, 5 m wide and 3 m high. What is the area of its four walls (in square m)?
  22. 22.A trapezium has an area of 360 square cm. Its parallel sides are 29 cm and 19 cm. What is the distance between them (in cm)?
  23. 23.A trapezium has parallel sides of 23 cm and 27 cm, and the distance between them is 20 cm. What is its area (in square cm)?
  24. 24.A trapezium has parallel sides of 14 cm and 6 cm, and the distance between them is 5 cm. What is its area (in square cm)?
  25. 25.A trapezium has parallel sides of 21 cm and 16 cm, and the distance between them is 2 cm. What is its area (in square cm)?
  26. 26.The total surface area of a cube is 864 square cm. How long is each edge (in cm)?
  27. 27.A trapezium has parallel sides of 13 cm and 29 cm, and the distance between them is 2 cm. What is its area (in square cm)?
  28. 28.A cuboid is 12 cm long, 12 cm wide and 4 cm high. What is its total surface area (in square cm)?
  29. 29.A trapezium has parallel sides of 23 cm and 15 cm, and the distance between them is 12 cm. What is its area (in square cm)?
  30. 30.A cuboid is 9 cm long, 5 cm wide and 5 cm high. What is its total surface area (in square cm)?
  31. 31.Each edge of a cube is 2 cm. What is its total surface area (in square cm)?
  32. 32.The total surface area of a cube is 150 square cm. How long is each edge (in cm)?
  33. 33.The diagonals of a rhombus are 30 cm and 7 cm. What is its area (in square cm)?
  34. 34.A trapezium has an area of 172 square cm. Its parallel sides are 20 cm and 23 cm. What is the distance between them (in cm)?
  35. 35.Each edge of a cube is 5 cm. What is its total surface area (in square cm)?
  36. 36.The diagonals of a rhombus are 4 cm and 19 cm. What is its area (in square cm)?
  37. 37.The total surface area of a cube is 2166 square cm. How long is each edge (in cm)?
  38. 38.A room is 8 m long, 6 m wide and 4 m high. What is the area of its four walls (in square m)?
  39. 39.A cuboid is 5 cm long, 12 cm wide and 4 cm high. What is its total surface area (in square cm)?
  40. 40.A cuboid is 6 cm long, 11 cm wide and 3 cm high. What is its total surface area (in square cm)?

Answer key

  1. 70
  2. 92
  3. 2
  4. 216
  5. 12
  6. 726
  7. 100
  8. 120
  9. 165
  10. 135
  11. 864
  12. 4
  13. 658
  14. 20
  15. 126
  16. 4
  17. 130
  18. 10
  19. 80
  20. 11
  21. 84
  22. 15
  23. 500
  24. 50
  25. 37
  26. 12
  27. 42
  28. 480
  29. 228
  30. 230
  31. 24
  32. 5
  33. 105
  34. 8
  35. 150
  36. 38
  37. 19
  38. 112
  39. 256
  40. 234

Free maths worksheets lessons, practice and worksheets at talentjr.in/maths-worksheets