If the area of a circle increases at a uniform rate, then prove that perimeter varies inversely as the radius.

If the area of circle increases at a uniform rate, then prove that the perimeter varies inversely as the radius.

If the area of circle increases at a uniform rate, then prove that the perimeter varies inversely as the radius.

If the area of a circle increases at a uniform rate, then prove that the perimeter varies inversely as the radius.

If the area of circle increases at a uniform rate,then prove that the perimeter varies inversely as the radius.

If the area of circle increasing at a uniform rate, then prove that perimetre varies inversely as the radius.

(i) The radius of a circle is increasing at the rate of 5 cm/sec. Find the rate of increasing of its perimeter. (ii) If the area of a circle increases at a constant rate, then show that the rate of increase of its circumference is inversely proportional to its radius.

(i) The radius of a circle is increasing at the rate of 5 cm/sec. Find the rate of increasing of its perimeter. (ii) If the area of a circle increases at a constant rate, then show that the rate of increase of its circumference is inversely proportional to its circumference is iversely proportional to its radius.

If the radius of a circle is increasing at a uniform rate of 2 cm/s, then find the rate of increase of area of circle at the instant when the radius is 20 cm.

If the radius of a circle is increasing at a uniform rate of 2 cm/s, then find the rate of increase of area of circt the instant when the radius is 20 cm.