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April 18, 2015

Posted by **winston** on Thursday, December 30, 2010 at 8:20pm.

- help on calculus -
**drwls**, Friday, December 31, 2010 at 3:29amVolume = V = (4/3) pi r^3

dV/dt = 4 pi r^2 dr/dt

When the area 4 pi r^2 = 4 pi, the value of r is 1.

At that instant,

dV/dt = 4 pi *(1 cm^2)*2 cm/s

= 8 pi cm^3/s

- help on calculus -
**Final fan**, Monday, December 17, 2012 at 12:41amHhh

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