The radius of a circular blot of oil is increasing at the rate of 2 cm/min.
Find the rate of change of its area when its radius is 3 cm.

The radius of a circular blot of oil is increasing at the rate of 2 cm/min. The rate of change of its circumference is

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

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 0.3cm/s. Find the rate of change of its: Volume when the radius is 8 cm.

The radius of a circular plate is increasing at the rate of 0.01 cm/sec. The rate of increase of its area when the radius is 12 m

The radius of a circle is increasing at a rate of 2.5 cm/sec. Find the rate of increase of the area of the circle when its radius is 5cm.

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 radius of an air bubble in increasing at the rate of 0.5cm/s. Find the rate of change of its volume, when the radius is 1.5 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