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A = (pi)(r)2

(dA/dt) = (2(pi)(r)) * (dr/dt)

(8) = (2(pi)(96)) * (dr/dt)

(dr/dt) = (1) / (24(pi))

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Q: The area of a circle is increasing at a uniform rate of 8cm square per second Calculate the rate of increase of the radius when the circumference of the circle is 96cm?
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