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March 28, 2015

March 28, 2015

Posted by **Brandi** on Saturday, October 31, 2009 at 9:58am.

h, of the cylinder is equal to the diameter, d, of the hemisphere

- math -
**jim**, Saturday, October 31, 2009 at 10:18amvolume of cyl: pi r^2 h

but if h = d then h = 2r, so

pi * r^2 * 2r

= 2pi * r^3

Vol of hemisphere = (1/2) volume of sphere:

= 2/3 pi r^3

So the ratio is obvious from those results.

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