Suppose oil spills from a ruptured tanker and spreads in a circular pattern. If the radius of the oil spill increases at a constant rate of 2 m/s, exactly how fast (in m2/s) is the area of the spill increasing when the radius is 39 m?

Explanation:

The area of a circle of radius r is given by

Taking the derivative of A with respect to time t, we get

We also know that

this is a good question! i'll do some research and come back when i have the answer!

unlike poles attract