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

Class 8 Maths Worksheet: Mensuration

Maths worksheets lesson 62: Mensuration: trapezium, cuboid and cube · Set 211 · 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.Each edge of a cube is 4 cm. What is its total surface area (in square cm)?
  2. 2.The total surface area of a cube is 864 square cm. How long is each edge (in cm)?
  3. 3.A trapezium has parallel sides of 28 cm and 20 cm, and the distance between them is 3 cm. What is its area (in square cm)?
  4. 4.A trapezium has an area of 330 square cm. Its parallel sides are 19 cm and 14 cm. What is the distance between them (in cm)?
  5. 5.A cuboid is 4 cm long, 6 cm wide and 3 cm high. What is its total surface area (in square cm)?
  6. 6.A trapezium has an area of 198 square cm. Its parallel sides are 19 cm and 3 cm. What is the distance between them (in cm)?
  7. 7.Each edge of a cube is 7 cm. What is its total surface area (in square cm)?
  8. 8.A room is 8 m long, 4 m wide and 4 m high. What is the area of its four walls (in square m)?
  9. 9.A cuboid is 10 cm long, 10 cm wide and 4 cm high. What is its total surface area (in square cm)?
  10. 10.A trapezium has an area of 198 square cm. Its parallel sides are 17 cm and 16 cm. What is the distance between them (in cm)?
  11. 11.A trapezium has an area of 135 square cm. Its parallel sides are 25 cm and 29 cm. What is the distance between them (in cm)?
  12. 12.A cuboid is 7 cm long, 7 cm wide and 10 cm high. What is its total surface area (in square cm)?
  13. 13.A trapezium has an area of 300 square cm. Its parallel sides are 25 cm and 5 cm. What is the distance between them (in cm)?
  14. 14.The total surface area of a cube is 150 square cm. How long is each edge (in cm)?
  15. 15.Each edge of a cube is 8 cm. What is its total surface area (in square cm)?
  16. 16.A cuboid is 7 cm long, 11 cm wide and 6 cm high. What is its total surface area (in square cm)?
  17. 17.The total surface area of a cube is 384 square cm. How long is each edge (in cm)?
  18. 18.Each edge of a cube is 24 cm. What is its total surface area (in square cm)?
  19. 19.The total surface area of a cube is 294 square cm. How long is each edge (in cm)?
  20. 20.A trapezium has parallel sides of 15 cm and 17 cm, and the distance between them is 17 cm. What is its area (in square cm)?
  21. 21.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)?
  22. 22.A room is 4 m long, 3 m wide and 5 m high. What is the area of its four walls (in square m)?
  23. 23.A trapezium has parallel sides of 27 cm and 13 cm, and the distance between them is 15 cm. What is its area (in square cm)?
  24. 24.A trapezium has an area of 162 square cm. Its parallel sides are 17 cm and 10 cm. What is the distance between them (in cm)?
  25. 25.A cuboid is 8 cm long, 7 cm wide and 2 cm high. What is its total surface area (in square cm)?
  26. 26.A room is 8 m long, 8 m wide and 3 m high. What is the area of its four walls (in square m)?
  27. 27.The total surface area of a cube is 600 square cm. How long is each edge (in cm)?
  28. 28.Each edge of a cube is 9 cm. What is its total surface area (in square cm)?
  29. 29.Each edge of a cube is 6 cm. What is its total surface area (in square cm)?
  30. 30.A trapezium has parallel sides of 11 cm and 23 cm, and the distance between them is 16 cm. What is its area (in square cm)?
  31. 31.A trapezium has parallel sides of 8 cm and 17 cm, and the distance between them is 18 cm. What is its area (in square cm)?
  32. 32.Each edge of a cube is 21 cm. What is its total surface area (in square cm)?
  33. 33.A trapezium has an area of 264 square cm. Its parallel sides are 27 cm and 21 cm. What is the distance between them (in cm)?
  34. 34.Each edge of a cube is 20 cm. What is its total surface area (in square cm)?
  35. 35.The total surface area of a cube is 1734 square cm. How long is each edge (in cm)?
  36. 36.A room is 6 m long, 4 m wide and 4 m high. What is the area of its four walls (in square m)?
  37. 37.A room is 3 m long, 5 m wide and 5 m high. What is the area of its four walls (in square m)?
  38. 38.A trapezium has an area of 189 square cm. Its parallel sides are 20 cm and 7 cm. What is the distance between them (in cm)?
  39. 39.The total surface area of a cube is 2400 square cm. How long is each edge (in cm)?
  40. 40.Each edge of a cube is 5 cm. What is its total surface area (in square cm)?

Answer key

  1. 96
  2. 12
  3. 72
  4. 20
  5. 108
  6. 18
  7. 294
  8. 96
  9. 360
  10. 12
  11. 5
  12. 378
  13. 20
  14. 5
  15. 384
  16. 370
  17. 8
  18. 3456
  19. 7
  20. 272
  21. 8
  22. 70
  23. 300
  24. 12
  25. 172
  26. 96
  27. 10
  28. 486
  29. 216
  30. 272
  31. 225
  32. 2646
  33. 11
  34. 2400
  35. 17
  36. 80
  37. 80
  38. 14
  39. 20
  40. 150

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