The Radius, R, of a Circle Is Decreasing at a Rate

question 46

Multiple Choice

The radius, r, of a circle is decreasing at a rate of 2 centimeters per minute. ​
Find the rate of change of area, A, when the radius is 3.
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Definitions:

Parasympathetic

The part of the autonomic nervous system responsible for relaxation and conservation of energy.

Sympathetic

Part of the autonomic nervous system that prepares the body for action in challenging or threatening situations.

Parasympathetic

Part of the autonomic nervous system responsible for the body's rest and digest response, counteracting the fight or flight system.

Aroused

A state of heightened physiological and psychological activity, including alertness and emotional engagement.