[" 22.The volume of a sphere is increasing at the rate "],[" of "8cm^(3)/s" .Find the rate at which its surface area is "],[" increasing when the radius of the sphere is "12cm" ."]

The volume of a sphere is increasing at the rate of pi cm^(2)//sec . The rate at which the radius is increasing is ……….., when the radius is 3 cm.

The volume of a spherical balloon is increasing at the rate of 20 cm^3/sec . Find the rate at which its surface area is increasing at the instant when its radius is 4 cm.

A sphere increases its volume at the rate of pi cm^(3)//sec . The rate at which its surface area increases when the radius is 1 cm is

The volume of a sphere increase at the rate of 20cm^(3)//sec . Find the rate of change of its surface area when its radius is 5 cm

The volume of a spherical balloon is increasing at the rate of 20 cm^3/sec . Find the rate of change of its surface area at the instant when radius is 5 cm.

A copper sphere is being heated. Its volume as a result of increasing at the rate of 1mm^(3) every second. Find the rate at which its surface area is increasing when its radius 10 cm.

A copper sphere is being heated. Its volume as a result of increasing at the rate of 1mm^(3) every second. Find the rate at which its surface area is increasing when its radius 10 cm.

The volume of a sphere increse at the rate of 20 cm^3 /sec. Find the rate of change of its surface area when its radius is 5cm.

The volume of a spherical balloon is increasing at the rate of 20 cm^3 / sec . Find the rate of change of its surface area at the instant when radius is 5 cm.