Sunday

April 19, 2015

April 19, 2015

Posted by **Jess** on Sunday, March 23, 2008 at 1:31am.

- Calculus -
**Reiny**, Sunday, March 23, 2008 at 8:05amYou can derive the formula for the volume of a sphere by rotating the circle

x^2 + y^2 = r^2 about the x axis by taking the

integral of pi(r^2 - x^2)dx from -r to +r

Is this what you meant?

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