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April 21, 2015

April 21, 2015

Posted by **Anonymous** on Sunday, August 19, 2012 at 2:17am.

- Math -
**Reiny**, Sunday, August 19, 2012 at 8:21amsurface are = 2 end circles + "sleeve" of cylinder

2πr^2 + 2πrh = 154 , where r is the radius and h is the height

but h = r

2πr^2 + 2πr^2 = 154

r^2 = 77/π

r = √(77/π)

= .....

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