Question: Calculus Word Problem: A rock is thrown into a still pond. The circular ripples move outward from the point of impact from the rock so

Calculus Word Problem: A rock is thrown into a still pond. The circular ripples move outward from the point of impact from the rock so that the radius of the circle formed by a ripple increases at the rate of 2 ft per minute. Find the rate at which the area is changing at the instant the radius is 8 feet

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