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; Nov 19th 2010 at 09:01 PM.
Reason: Restored deleted question.
Follow Math Help Forum on Facebook and Google+
You know dr/dt.
You know that
Find dA/dr and plug in r = 1 and plug that in the chain rule equation.
View Tag Cloud