Let be the area of a circle with radius . If , find when .
Thanks Moderator edit: Deleted post restored. Thread closed.
Last edited by mr fantastic; November 19th 2010 at 09:01 PM.
Reason: Restored deleted question.
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You know dr/dt.
You know that
Find dA/dr and plug in r = 1 and plug that in the chain rule equation.
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