The rate of change of surface area of a sphere of radius r when the radius is increasing at the rate of 2 cm/sec is proportional to

The rate of change of surface area of a sphere of radius r when the radius is increasing at the rate of 2 cm/s. is proportional to

The rate of change of the surface area of a sphere of radius r when the radius is increasing at the rate of 2cm/sec is proportional to

The rate of change of surface area of a sphere w.r.t. radius is ………..

Find the rate of the change of surface area of a sphere when its radius is increasing at the rate of 3/pi cm/min and its radius is 1 cm.

Rate of increase in surface area of a sphere w.r.t radius is ……….

If the rate of change of surface area of a sphere is 4m^2 /sec , then the rate of change of volume when the radius is 3m is.

The rate of change of the volume of the sphere w.r.t its surface area, when its radius is 2cm is