The radius r of a circle is increasing at a rate of 3 inches per minute. Find the rate of change of the area when r = 5 inches and r = 20 inches. (a) r= 5 inches (b) r = 20 inches. in2/min in²/min

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Find the rates of change
The radius r of a circle is increasing at a rate of 3 inches per minute. Find the rate of change of the area when r = 5 inches and r = 20 inches.
(a) r = 5 inches
(b) r = 20 inches.
in2/min
in²/min
Transcribed Image Text:The radius r of a circle is increasing at a rate of 3 inches per minute. Find the rate of change of the area when r = 5 inches and r = 20 inches. (a) r = 5 inches (b) r = 20 inches. in2/min in²/min
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