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July 3, 2015

Homework Help: Calc

Posted by Vince on Sunday, March 15, 2009 at 10:03pm.

Air is being pumped into a spherical balloon so that its volume increases at a rate of 90{cm}^3/s. How fast is the surface area of the balloon increasing when its radius is 7{cm}? Recall that a ball of radius r has volume \displaystyle V={4}/{3}pie r^3 and surface area S=4\pi r^2

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