An oil tanker hits a reef and begins to leak oil. The resulting spill is circular in shape and increasing in size. If the radius of the spill is increasing at the rate of 6 m/sec, how fast is the area...

An oil tanker hits a reef and begins to leak oil. The resulting spill is circular in shape and increasing in
size. If the radius of the spill is increasing at the rate of 6 m/sec, how fast is the area of the spill increasing
when the radius is 100 meters?