Question

A cylindrical bucket with base radius 15 cm is filled with water up to a height of 20 cm. A heavy iron spherical ball of radius 9 cm is dropped into the bucket to submerge completely in the water. Find the increase in the level of water.

Answer 1

Correct Answer - 4.32 cm
Let the increase in level be h cm.
Increase in volume of water = volume of the ball
`:. pi xx 15 xx 15 xx h = (4)/(3) pi xx 9 xx 9 xx 9`. Find h.