11. Given:
Surface area of cube: 56 m2
Find its volume.
a. 9 m3
b. 16 m3
c. 27 m3
d. 81 m3
Answer: c. 27 m3
12. Given:
Dimensions of a wall: 6 m X 5 m X 0.5 m
Dimensions of bricks: 25 cm X 12.5 cm X 7.5 cm
Mortar occupies 5% volume of wall.
Find the number of brick we would need to build this wall.
a. 3040
b. 5740
c. 6080
d. 8120
Answer: c. 6080
13. I have a cylinder with the capacity 246 l 400 ml. Its height is 4 m. Find the diameter of its base.
a. 1.4 m
b. 2.8 m
c. 14 m
d. 28 m
Answer: d. 28 m
14. A teacher has a hemisphere of diameter 'd' and asks his trainee to cut out a sphere of maximum volume. Find (Volume of hemisphere) : (Volume of cut out sphere).
a. 3 : 2
b. 4 : 1
c. 4 : 3
d. 7 : 4
Answer: b. 4 : 1
15. What will be the effect on the volume of a right circular cone if the radius and height increase by 20%?
a. 2 times increase
b. 3 times increase
c. 4 times increase
d. 8 times increase
