Mark the correct alternative in the following: The radius of a circular plate is increasing at the rate of 0.01 cm/sec. The rate of increases its area when the radius is 12 cm is

Question

Philoid · Accepted Answer

The circumference of a circle, with radius r, is defined as

A(r)=πr² – (1)

Given that r=12cm, , we have to calculate

Differentiating (1) with respect to t, we get

Mark the correct alternative in the following:The radius of a circular plate is increasing at the rate of 0.01 cm/sec. The rate of increases its area when the radius is 12 cm is

Mark the correct alternative in the following:
The radius of a circular plate is increasing at the rate of 0.01 cm/sec. The rate of increases its area when the radius is 12 cm is