The radius of a cylinder is increasing at a rate of `1 cm//s` and its height decreasing at a rate of `1 cm//s`. Find the rate of change of its volume when the radius is 5 cm and the height is 5 cm.

The radius of a cylinder increases at a rate of 1 cm/s and its height decreases at a rate of 1cm/s. Find the rate of change of its volume when the radius is 5 cm and the height is 15 cm. If the volume should not change even when the radius and height are changed, what is the relation between the radius and height?

The radius of a cylinder is increasing at the rate of 3m/s and its altitude is decreasing at the rate of 4m/s .The rate of change of volume when radius is 4m and altitude is 6m is : a) 80 pi " cu m" //s b) 144 pi " cu " m//s c) 80 " cu " m//s d) 64 " cu " m//s

The length 'x' of a rectangle is decreasing at the rate of 2cm//s and the width 'y' is increasing at the rate of 2cm//s . Find the rate of change of perimeter.

The radius of a circle is increasing at the rate of 0.7 cm/s. What is the rate of increase of its circumference?

The radius of a circle is increasing at the rate of 2cm//s . Find the rate at which area of the circle is increasing when radius is 6 cm.

Find the rate of change of the area of circle with respect to its radius r when r=5 cm

Find the rate of change of the area of a circle with respect to its radius r when r = 5 cm.