Asked by Sara

your problem with the oil slick is very helpful but all I need is A of the oil slick as a function of the time t. the radius in feet of the spread after t hours is r(t)= 200sqrt t.

Answers

Answered by Steve
since A = pi r^2,
A(t) = pi * (200 * sqrt(t))^2 = 40,000 pi*t
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