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

Class 8 Maths Worksheet: Mensuration

Maths worksheets lesson 62: Mensuration: trapezium, cuboid and cube · Set 243 · 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 5 cm long, 8 cm wide and 6 cm high. What is its total surface area (in square cm)?
  2. 2.A trapezium has parallel sides of 10 cm and 22 cm, and the distance between them is 11 cm. What is its area (in square cm)?
  3. 3.A room is 11 m long, 3 m wide and 3 m high. What is the area of its four walls (in square m)?
  4. 4.The total surface area of a cube is 864 square cm. How long is each edge (in cm)?
  5. 5.The diagonals of a rhombus are 4 cm and 14 cm. What is its area (in square cm)?
  6. 6.A trapezium has an area of 245 square cm. Its parallel sides are 18 cm and 17 cm. What is the distance between them (in cm)?
  7. 7.A cuboid is 8 cm long, 4 cm wide and 2 cm high. What is its total surface area (in square cm)?
  8. 8.A cuboid is 10 cm long, 3 cm wide and 4 cm high. What is its total surface area (in square cm)?
  9. 9.A room is 6 m long, 4 m wide and 4 m high. What is the area of its four walls (in square m)?
  10. 10.A room is 5 m long, 7 m wide and 5 m high. What is the area of its four walls (in square m)?
  11. 11.A cuboid is 13 cm long, 5 cm wide and 7 cm high. What is its total surface area (in square cm)?
  12. 12.A trapezium has parallel sides of 12 cm and 16 cm, and the distance between them is 13 cm. What is its area (in square cm)?
  13. 13.A cuboid is 5 cm long, 10 cm wide and 2 cm high. What is its total surface area (in square cm)?
  14. 14.A cuboid is 5 cm long, 8 cm wide and 10 cm high. What is its total surface area (in square cm)?
  15. 15.A room is 4 m long, 10 m wide and 3 m high. What is the area of its four walls (in square m)?
  16. 16.A room is 7 m long, 5 m wide and 3 m high. What is the area of its four walls (in square m)?
  17. 17.A trapezium has parallel sides of 8 cm and 2 cm, and the distance between them is 12 cm. What is its area (in square cm)?
  18. 18.A trapezium has an area of 105 square cm. Its parallel sides are 20 cm and 15 cm. What is the distance between them (in cm)?
  19. 19.A trapezium has an area of 189 square cm. Its parallel sides are 4 cm and 23 cm. What is the distance between them (in cm)?
  20. 20.A trapezium has parallel sides of 15 cm and 8 cm, and the distance between them is 6 cm. What is its area (in square cm)?
  21. 21.Each edge of a cube is 3 cm. What is its total surface area (in square cm)?
  22. 22.The total surface area of a cube is 96 square cm. How long is each edge (in cm)?
  23. 23.A trapezium has parallel sides of 18 cm and 26 cm, and the distance between them is 3 cm. What is its area (in square cm)?
  24. 24.A cuboid is 7 cm long, 10 cm wide and 4 cm high. What is its total surface area (in square cm)?
  25. 25.Each edge of a cube is 21 cm. What is its total surface area (in square cm)?
  26. 26.A room is 11 m long, 8 m wide and 3 m high. What is the area of its four walls (in square m)?
  27. 27.A cuboid is 4 cm long, 10 cm wide and 8 cm high. What is its total surface area (in square cm)?
  28. 28.A cuboid is 13 cm long, 5 cm wide and 6 cm high. What is its total surface area (in square cm)?
  29. 29.A room is 5 m long, 10 m wide and 5 m high. What is the area of its four walls (in square m)?
  30. 30.The diagonals of a rhombus are 10 cm and 13 cm. What is its area (in square cm)?
  31. 31.The diagonals of a rhombus are 20 cm and 15 cm. What is its area (in square cm)?
  32. 32.A cuboid is 10 cm long, 8 cm wide and 4 cm high. What is its total surface area (in square cm)?
  33. 33.A cuboid is 15 cm long, 12 cm wide and 4 cm high. What is its total surface area (in square cm)?
  34. 34.A trapezium has parallel sides of 18 cm and 9 cm, and the distance between them is 6 cm. What is its area (in square cm)?
  35. 35.The total surface area of a cube is 24 square cm. How long is each edge (in cm)?
  36. 36.The diagonals of a rhombus are 10 cm and 19 cm. What is its area (in square cm)?
  37. 37.A trapezium has an area of 102 square cm. Its parallel sides are 5 cm and 7 cm. What is the distance between them (in cm)?
  38. 38.A trapezium has an area of 208 square cm. Its parallel sides are 10 cm and 16 cm. What is the distance between them (in cm)?
  39. 39.A trapezium has parallel sides of 23 cm and 20 cm, and the distance between them is 6 cm. What is its area (in square cm)?
  40. 40.The diagonals of a rhombus are 12 cm and 12 cm. What is its area (in square cm)?

Answer key

  1. 236
  2. 176
  3. 84
  4. 12
  5. 28
  6. 14
  7. 112
  8. 164
  9. 80
  10. 120
  11. 382
  12. 182
  13. 160
  14. 340
  15. 84
  16. 72
  17. 60
  18. 6
  19. 14
  20. 69
  21. 54
  22. 4
  23. 66
  24. 276
  25. 2646
  26. 114
  27. 304
  28. 346
  29. 150
  30. 65
  31. 150
  32. 304
  33. 576
  34. 81
  35. 2
  36. 95
  37. 17
  38. 16
  39. 129
  40. 72

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