6) The volume of a spherical balloon is increasing at the rate of 20cm / sec. Find the rate of change of its surface area at the instant when its radius is 8 cm.

6) The volume of a spherical balloon is increasing at the rate of 20cm/sec. Find the rate of change of its surface area at the instant when its radius is 8cm.

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.

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.

The volume of a spherical balloon is increasing at the rate of 25 cm^(3)//s . Find the rate of change of its surface area at the instant, 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 at which its surface area is increasing at the instant when its radius is 4 cm.

IF the volume of a spherical balloon is increasing at the rate of 900cm^3//sec , then the rate of change of radius of balloon at an instant when radius is 15cm [in cm//sec ] is

IF the volume of a spherical balloon is increasing at the rate of 900cm^3//sec , then the rate of change of radisu of balloon at an instant when radius is 15cm [in cm//sec ] is

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.