(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A stone dropped into a still pond sends out a circular ripple whose radius increases at a constant rate of 3 ft/s. Does the area also increase at a constant rate?

2. Relevant equations

A = ∏r^{2}

3. The attempt at a solution

dA/dt = 2∏r(dr/dt)

dA/dt = 2∏r(3ft/s)

What now?

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# Related RateArea of Circle

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