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

Class 8 Maths Worksheet: Mensuration

Maths worksheets lesson 62: Mensuration: trapezium, cuboid and cube · Set 182 · 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 an area of 11 square cm. Its parallel sides are 5 cm and 6 cm. What is the distance between them (in cm)?
  2. 2.Each edge of a cube is 14 cm. What is its total surface area (in square cm)?
  3. 3.A trapezium has an area of 27 square cm. Its parallel sides are 21 cm and 6 cm. What is the distance between them (in cm)?
  4. 4.A cuboid is 14 cm long, 9 cm wide and 9 cm high. What is its total surface area (in square cm)?
  5. 5.Each edge of a cube is 17 cm. What is its total surface area (in square cm)?
  6. 6.A room is 12 m long, 8 m wide and 3 m high. What is the area of its four walls (in square m)?
  7. 7.The diagonals of a rhombus are 28 cm and 27 cm. What is its area (in square cm)?
  8. 8.The diagonals of a rhombus are 14 cm and 23 cm. What is its area (in square cm)?
  9. 9.A cuboid is 4 cm long, 12 cm wide and 7 cm high. What is its total surface area (in square cm)?
  10. 10.The total surface area of a cube is 726 square cm. How long is each edge (in cm)?
  11. 11.The diagonals of a rhombus are 18 cm and 23 cm. What is its area (in square cm)?
  12. 12.The total surface area of a cube is 384 square cm. How long is each edge (in cm)?
  13. 13.The diagonals of a rhombus are 10 cm and 11 cm. What is its area (in square cm)?
  14. 14.The diagonals of a rhombus are 8 cm and 10 cm. What is its area (in square cm)?
  15. 15.A cuboid is 3 cm long, 5 cm wide and 10 cm high. What is its total surface area (in square cm)?
  16. 16.A room is 9 m long, 7 m wide and 3 m high. What is the area of its four walls (in square m)?
  17. 17.The diagonals of a rhombus are 6 cm and 8 cm. What is its area (in square cm)?
  18. 18.Each edge of a cube is 18 cm. What is its total surface area (in square cm)?
  19. 19.The diagonals of a rhombus are 14 cm and 10 cm. What is its area (in square cm)?
  20. 20.A room is 10 m long, 8 m wide and 4 m high. What is the area of its four walls (in square m)?
  21. 21.A cuboid is 7 cm long, 3 cm wide and 2 cm high. What is its total surface area (in square cm)?
  22. 22.The diagonals of a rhombus are 22 cm and 9 cm. What is its area (in square cm)?
  23. 23.The diagonals of a rhombus are 4 cm and 10 cm. What is its area (in square cm)?
  24. 24.The total surface area of a cube is 1014 square cm. How long is each edge (in cm)?
  25. 25.A trapezium has parallel sides of 24 cm and 4 cm, and the distance between them is 12 cm. What is its area (in square cm)?
  26. 26.Each edge of a cube is 10 cm. What is its total surface area (in square cm)?
  27. 27.A trapezium has an area of 399 square cm. Its parallel sides are 29 cm and 13 cm. What is the distance between them (in cm)?
  28. 28.The diagonals of a rhombus are 14 cm and 21 cm. What is its area (in square cm)?
  29. 29.A room is 8 m long, 3 m wide and 3 m high. What is the area of its four walls (in square m)?
  30. 30.A trapezium has parallel sides of 21 cm and 7 cm, and the distance between them is 9 cm. What is its area (in square cm)?
  31. 31.A room is 5 m long, 10 m wide and 5 m high. What is the area of its four walls (in square m)?
  32. 32.A room is 8 m long, 4 m wide and 3 m high. What is the area of its four walls (in square m)?
  33. 33.A room is 3 m long, 8 m wide and 4 m high. What is the area of its four walls (in square m)?
  34. 34.The total surface area of a cube is 54 square cm. How long is each edge (in cm)?
  35. 35.The diagonals of a rhombus are 20 cm and 9 cm. What is its area (in square cm)?
  36. 36.Each edge of a cube is 25 cm. What is its total surface area (in square cm)?
  37. 37.A room is 8 m long, 5 m wide and 5 m high. What is the area of its four walls (in square m)?
  38. 38.A room is 8 m long, 8 m wide and 4 m high. What is the area of its four walls (in square m)?
  39. 39.The diagonals of a rhombus are 14 cm and 15 cm. What is its area (in square cm)?
  40. 40.Each edge of a cube is 11 cm. What is its total surface area (in square cm)?

Answer key

  1. 2
  2. 1176
  3. 2
  4. 666
  5. 1734
  6. 120
  7. 378
  8. 161
  9. 320
  10. 11
  11. 207
  12. 8
  13. 55
  14. 40
  15. 190
  16. 96
  17. 24
  18. 1944
  19. 70
  20. 144
  21. 82
  22. 99
  23. 20
  24. 13
  25. 168
  26. 600
  27. 19
  28. 147
  29. 66
  30. 126
  31. 150
  32. 72
  33. 88
  34. 3
  35. 90
  36. 3750
  37. 130
  38. 128
  39. 105
  40. 726

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