A cylindrical tub of radius 12 cm contains water to a depth of 20 cm. A spherical iron ball is
Channel: Doubtnut
Date: 2020-01-03

A cylindrical tub of radius 12 cm contains water to a depth of 20 cm. A spherical iron ball is dropped into the tub and thus the level of water is raised by 6.75 cm. What is the radius of the balls ?