The area of a circle decreases at the rate of

MATHEMATICS · Subjective · AP · Calculus AB · Contextual Applications of Differentiation · Contextual Applications of Differentiation

Problem

The area of a circle decreases at the rate of 3 cm s−13 \text{ cm s}^{-1} . Find the rate at which the radius of the circle is decreasing at the time when it equals 12 cm.

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