The air if filled in a balloon and the volume of balloon increases gradually. Find the rate of increase of volume of balloon with radius when of balloon becomes 30 cm.

A balloon is being filled by air so that its volume V is gradually increasing. Find the rate of increase of volume with radius r when r=2 units.

The surface of a spharical balloon is increasing at a rate of 2cm^2/sec. Find the rate of increase of its volume when its radius is 6 cm.

eExplain why, when air is filled into a balloon, the balloon gets inflated.

The volume of a spherical balloon is increasing at a rate of 25 cm^(3)//sec . Find the rate of increase of its curved surface when the radius of balloon is 5 cm.

The volume of a spherical balloon is increasing at a rate of 25 cm^(3)//sec . Find the rate of increase of its curved surface when the radius of balloon is 5 cm.

A balloon which remains spherical has a vertical radius. Find the rate at which its volume is increasing with the radius when the radius is 10 cm.

The surface area of a spherical balloon is increasing at the rate of 2 (cm^2)/sec . At what rate the volume of the balloon is increasing when the radius of the balloon is 6 cm?

The surface area of spherical balloon is increasing at the rate of 2cm^(2) /sec. Find the rate of change of its volume when its radius is 5cm