Solve the Problem. -An Oil Well Off the Gulf Coast Is Leaking, with Is

Solve the problem.
-An oil well off the Gulf Coast is leaking, with the leak spreading oil over the surface of the gulf as a circle.At any time t, in minutes, after the beginning of the leak, the radius of the oil slick on the surface isr(t) = 4t ft. Find the area A of the oil slick as a function of time.

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