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

Class 8 Maths Worksheet: Mensuration

Maths worksheets lesson 62: Mensuration: trapezium, cuboid and cube · Set 65 · 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.The total surface area of a cube is 54 square cm. How long is each edge (in cm)?
  2. 2.A trapezium has an area of 132 square cm. Its parallel sides are 4 cm and 20 cm. What is the distance between them (in cm)?
  3. 3.A cuboid is 5 cm long, 8 cm wide and 4 cm high. What is its total surface area (in square cm)?
  4. 4.A trapezium has an area of 68 square cm. Its parallel sides are 11 cm and 6 cm. What is the distance between them (in cm)?
  5. 5.A trapezium has parallel sides of 19 cm and 14 cm, and the distance between them is 2 cm. What is its area (in square cm)?
  6. 6.A trapezium has parallel sides of 19 cm and 2 cm, and the distance between them is 12 cm. What is its area (in square cm)?
  7. 7.The diagonals of a rhombus are 12 cm and 7 cm. What is its area (in square cm)?
  8. 8.A room is 10 m long, 5 m wide and 5 m high. What is the area of its four walls (in square m)?
  9. 9.A trapezium has an area of 329 square cm. Its parallel sides are 28 cm and 19 cm. What is the distance between them (in cm)?
  10. 10.A trapezium has an area of 52 square cm. Its parallel sides are 5 cm and 21 cm. What is the distance between them (in cm)?
  11. 11.A room is 8 m long, 4 m wide and 4 m high. What is the area of its four walls (in square m)?
  12. 12.A cuboid is 13 cm long, 6 cm wide and 4 cm high. What is its total surface area (in square cm)?
  13. 13.A trapezium has parallel sides of 21 cm and 11 cm, and the distance between them is 19 cm. What is its area (in square cm)?
  14. 14.A trapezium has parallel sides of 27 cm and 12 cm, and the distance between them is 6 cm. What is its area (in square cm)?
  15. 15.A cuboid is 8 cm long, 7 cm wide and 5 cm high. What is its total surface area (in square cm)?
  16. 16.A trapezium has parallel sides of 7 cm and 10 cm, and the distance between them is 10 cm. What is its area (in square cm)?
  17. 17.A trapezium has parallel sides of 11 cm and 23 cm, and the distance between them is 7 cm. What is its area (in square cm)?
  18. 18.A trapezium has an area of 410 square cm. Its parallel sides are 24 cm and 17 cm. What is the distance between them (in cm)?
  19. 19.A trapezium has an area of 75 square cm. Its parallel sides are 26 cm and 4 cm. What is the distance between them (in cm)?
  20. 20.A trapezium has parallel sides of 24 cm and 6 cm, and the distance between them is 13 cm. What is its area (in square cm)?
  21. 21.The diagonals of a rhombus are 18 cm and 13 cm. What is its area (in square cm)?
  22. 22.A trapezium has parallel sides of 24 cm and 14 cm, and the distance between them is 6 cm. What is its area (in square cm)?
  23. 23.A trapezium has parallel sides of 29 cm and 4 cm, and the distance between them is 18 cm. What is its area (in square cm)?
  24. 24.A cuboid is 8 cm long, 8 cm wide and 9 cm high. What is its total surface area (in square cm)?
  25. 25.A trapezium has parallel sides of 17 cm and 5 cm, and the distance between them is 10 cm. What is its area (in square cm)?
  26. 26.A room is 5 m long, 7 m wide and 4 m high. What is the area of its four walls (in square m)?
  27. 27.The diagonals of a rhombus are 4 cm and 6 cm. What is its area (in square cm)?
  28. 28.A trapezium has an area of 63 square cm. Its parallel sides are 10 cm and 8 cm. What is the distance between them (in cm)?
  29. 29.A trapezium has parallel sides of 15 cm and 11 cm, and the distance between them is 6 cm. What is its area (in square cm)?
  30. 30.A cuboid is 14 cm long, 9 cm wide and 3 cm high. What is its total surface area (in square cm)?
  31. 31.A trapezium has parallel sides of 28 cm and 12 cm, and the distance between them is 20 cm. What is its area (in square cm)?
  32. 32.A trapezium has parallel sides of 28 cm and 26 cm, and the distance between them is 11 cm. What is its area (in square cm)?
  33. 33.A cuboid is 4 cm long, 2 cm wide and 10 cm high. What is its total surface area (in square cm)?
  34. 34.A trapezium has parallel sides of 28 cm and 23 cm, and the distance between them is 16 cm. What is its area (in square cm)?
  35. 35.Each edge of a cube is 6 cm. What is its total surface area (in square cm)?
  36. 36.The diagonals of a rhombus are 4 cm and 14 cm. What is its area (in square cm)?
  37. 37.The total surface area of a cube is 294 square cm. How long is each edge (in cm)?
  38. 38.A trapezium has an area of 28 square cm. Its parallel sides are 8 cm and 20 cm. What is the distance between them (in cm)?
  39. 39.The diagonals of a rhombus are 8 cm and 8 cm. What is its area (in square cm)?
  40. 40.A cuboid is 6 cm long, 9 cm wide and 6 cm high. What is its total surface area (in square cm)?

Answer key

  1. 3
  2. 11
  3. 184
  4. 8
  5. 33
  6. 126
  7. 42
  8. 150
  9. 14
  10. 4
  11. 96
  12. 308
  13. 304
  14. 117
  15. 262
  16. 85
  17. 119
  18. 20
  19. 5
  20. 195
  21. 117
  22. 114
  23. 297
  24. 416
  25. 110
  26. 96
  27. 12
  28. 7
  29. 78
  30. 390
  31. 400
  32. 297
  33. 136
  34. 408
  35. 216
  36. 28
  37. 7
  38. 2
  39. 32
  40. 288

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