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March 30, 2015

March 30, 2015

Posted by **Arvin** on Friday, November 2, 2012 at 11:25pm.

- calculus -
**Reiny**, Saturday, November 3, 2012 at 8:34amradius of water level --- r

height of water level --- h

by ratio:

r/h = 6/8

8r= 6h

r = 3h/5

V = (1/3)πr^2 h

= (1/3)π(9h^2/25)(h)

=3/25)πh^3

dV/dt = (9/25)π h^2 dh/dt

given: when h = 5 , dV/dt = 10

10 = (9/25)π (25) dh/dt

dh/dt = 10/(9π)

check my arithmetic

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