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Posted by **Nazish** on Saturday, November 6, 2010 at 7:03pm.

- 12th grade -
**Reiny**, Saturday, November 6, 2010 at 7:18pmV = (1/3)πr^2h

but h=r

V= (1/3)πr^3

dV/dt = πr^2 dr/dt

so when h = 8 , r = 8 and dV/dt = 8π

8π = π(8)^2 dr/dt

dr/dt = 8π/(64π) = 1/8 ft/min

- 12th grade -
**Nazish**, Saturday, November 6, 2010 at 8:03pmTHANKS!

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