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

Class 8 Maths Worksheet: Mensuration

Maths worksheets lesson 62: Mensuration: trapezium, cuboid and cube · Set 235 · 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 cuboid is 11 cm long, 12 cm wide and 2 cm high. What is its total surface area (in square cm)?
  2. 2.A cuboid is 7 cm long, 9 cm wide and 7 cm high. What is its total surface area (in square cm)?
  3. 3.The diagonals of a rhombus are 20 cm and 18 cm. What is its area (in square cm)?
  4. 4.A trapezium has an area of 184 square cm. Its parallel sides are 17 cm and 6 cm. What is the distance between them (in cm)?
  5. 5.Each edge of a cube is 12 cm. What is its total surface area (in square cm)?
  6. 6.Each edge of a cube is 4 cm. What is its total surface area (in square cm)?
  7. 7.A room is 4 m long, 8 m wide and 4 m high. What is the area of its four walls (in square m)?
  8. 8.A cuboid is 6 cm long, 12 cm wide and 5 cm high. What is its total surface area (in square cm)?
  9. 9.The diagonals of a rhombus are 6 cm and 23 cm. What is its area (in square cm)?
  10. 10.A trapezium has an area of 39 square cm. Its parallel sides are 10 cm and 16 cm. What is the distance between them (in cm)?
  11. 11.A trapezium has an area of 42 square cm. Its parallel sides are 10 cm and 4 cm. What is the distance between them (in cm)?
  12. 12.A trapezium has parallel sides of 26 cm and 27 cm, and the distance between them is 6 cm. What is its area (in square cm)?
  13. 13.A room is 9 m long, 10 m wide and 3 m high. What is the area of its four walls (in square m)?
  14. 14.A cuboid is 7 cm long, 10 cm wide and 2 cm high. What is its total surface area (in square cm)?
  15. 15.The diagonals of a rhombus are 12 cm and 27 cm. What is its area (in square cm)?
  16. 16.A cuboid is 15 cm long, 7 cm wide and 6 cm high. What is its total surface area (in square cm)?
  17. 17.A cuboid is 4 cm long, 9 cm wide and 2 cm high. What is its total surface area (in square cm)?
  18. 18.A cuboid is 6 cm long, 10 cm wide and 8 cm high. What is its total surface area (in square cm)?
  19. 19.The diagonals of a rhombus are 6 cm and 26 cm. What is its area (in square cm)?
  20. 20.A trapezium has an area of 32 square cm. Its parallel sides are 21 cm and 11 cm. What is the distance between them (in cm)?
  21. 21.The diagonals of a rhombus are 8 cm and 25 cm. What is its area (in square cm)?
  22. 22.A room is 4 m long, 3 m wide and 3 m high. What is the area of its four walls (in square m)?
  23. 23.A trapezium has an area of 40 square cm. Its parallel sides are 5 cm and 11 cm. What is the distance between them (in cm)?
  24. 24.A cuboid is 8 cm long, 6 cm wide and 8 cm high. What is its total surface area (in square cm)?
  25. 25.A room is 11 m long, 10 m wide and 3 m high. What is the area of its four walls (in square m)?
  26. 26.The total surface area of a cube is 294 square cm. How long is each edge (in cm)?
  27. 27.A trapezium has an area of 153 square cm. Its parallel sides are 8 cm and 10 cm. What is the distance between them (in cm)?
  28. 28.A cuboid is 4 cm long, 10 cm wide and 10 cm high. What is its total surface area (in square cm)?
  29. 29.Each edge of a cube is 20 cm. What is its total surface area (in square cm)?
  30. 30.A cuboid is 10 cm long, 9 cm wide and 4 cm high. What is its total surface area (in square cm)?
  31. 31.The total surface area of a cube is 2400 square cm. How long is each edge (in cm)?
  32. 32.Each edge of a cube is 21 cm. What is its total surface area (in square cm)?
  33. 33.A cuboid is 5 cm long, 2 cm wide and 8 cm high. What is its total surface area (in square cm)?
  34. 34.A trapezium has parallel sides of 7 cm and 27 cm, and the distance between them is 12 cm. What is its area (in square cm)?
  35. 35.A trapezium has an area of 72 square cm. Its parallel sides are 8 cm and 16 cm. What is the distance between them (in cm)?
  36. 36.Each edge of a cube is 18 cm. What is its total surface area (in square cm)?
  37. 37.A trapezium has parallel sides of 9 cm and 10 cm, and the distance between them is 10 cm. What is its area (in square cm)?
  38. 38.A trapezium has an area of 243 square cm. Its parallel sides are 9 cm and 18 cm. What is the distance between them (in cm)?
  39. 39.The total surface area of a cube is 486 square cm. How long is each edge (in cm)?
  40. 40.A room is 6 m long, 7 m wide and 5 m high. What is the area of its four walls (in square m)?

Answer key

  1. 356
  2. 350
  3. 180
  4. 16
  5. 864
  6. 96
  7. 96
  8. 324
  9. 69
  10. 3
  11. 6
  12. 159
  13. 114
  14. 208
  15. 162
  16. 474
  17. 124
  18. 376
  19. 78
  20. 2
  21. 100
  22. 42
  23. 5
  24. 320
  25. 126
  26. 7
  27. 17
  28. 360
  29. 2400
  30. 332
  31. 20
  32. 2646
  33. 132
  34. 204
  35. 6
  36. 1944
  37. 95
  38. 18
  39. 9
  40. 130

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