Q21 of 189 Page 512

If each side of a cube is doubled, then its volume

Let original side be x, New side will be 2x


Volume of a cube = (side)3


Original volume = (x)3


New volume = (2x)3 = 8x3


So, the volume is 8 times of the original volume

More from this chapter

All 189 →
19

In a shower, 5 cm of rain falls. What is the volume of water that falls on 2 hectares of ground?

 20

Two cubes have their volumes in the ratio 1 : 27. The ratio of their surface areas is

 22

The diameter of the base of a cylinder is 6 cm and its height is 14 cm. The volume of the cylinder is

 23

If the diameter of a cylinder is 28 cm and its height is 20 cm, then its curved surface area is