The radius of a soap bubble is increasing at the rate of `0.2 cms^(-1)` then the rate of increases of its surface area when radius 4 cm is

The radius of a soap bubble is increasing at the rate of 0.2cm//s . Find the rate of increase of its surface area when radius = 5 cm.

The radius of a spherical soap bubble is increasing at the rate of 0.2 cm/sec. Find the rate of increase of its surface area, when the radius is 7 cm.

The radius of a spherical soap bubble is increasing at the rate of 0.2 cm/sec. Find the rate of increase of its surface area, when the radius is 7 cm.

The radius of a spherical soap bubble is increasing at the rate of 0.2 cm/sec. Find the rate of increase of its surface area, when the radius is 7 cm.

The radius of a spherical soap bubble is increasing at the rate of 0.2cm/sec. Find the rate of increase of its surface area, when the radius is 7cm. ( pi=3.141 approx)

The radius of a circular soap bubble is increasing at the rate of 0.2 cm/s. Find the rate of change of its: Surface area when the radius is 4 cm.

The radius of a spherical soap bubble is increasing at the rate of 0.2cm/sec. Find the rate of increese of its surface area,when the radius is 7cm.

The radius of a spherical soap bubble is increasing at the rate of 0.2 cm // sec. Find the rate of increase of its surface area, when the radius is 7 cm. ( pi = 3.141 approx)

The radius of a soap-bubble is increasing at the rate of 0.2cm/s. Find the rate of increase of its volume when the radius is 5 cm.