A stone is dropped into a quiet lake and waves move in circle at a speed of 4 cm per second, At the instant, when the radius of the circular wave is 10 cm, how fast is the enclosed area increasing?

A stone is dropped into a quiet lake and waves move in circles at the speed of 5 cm/s. At the instant when the radius of the circular wave is 8 cm, how fast is the enclosed area increasing?

A stone is dropped into a quiet lake and waves move in circle at the speed of 5 cm/s. At the instant when the radius of the circular wave is 8 cm, how fast is the enclosed area increasing.

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.

The radius of a circle is increasing uniformly at the rate of 3 cm / s . Find the rate at which the area of the circle is increasing when the radius is 10cm .

The radius of a circle is increasing uniformly at the rate of 3cm/s. Find the rate at which the area of the circle is increasing when the radius is 10 cm.

The volume of a cube is increasing at a rate of 9 cubic centimetres per second. How fast is the surface area increasing when the length of an edge is 10 cm.

The volume of a cube is increasing at a rate of 9 cm^3 / s .How fast is in the surface area increasing when the length of an edge is 10 cm?

Find rate of change of area of a circle with respect to the time when the radius is increasing at the rate 0.7 cm/s.Given that r=5cm

Sand is pouring from a pipe at the rate of 12 cm^3 / s. The falling sand forms a cone on the ground in such a way that the height of the cone is always one-sixth of the radius of the base. How fast if the height of the sand cone increasing when the height is 4 cm ?'

Find rate of Change of area of a circle with respect to the radius,when r=10cm