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February 1, 2015

February 1, 2015

Posted by **Simon** on Tuesday, February 5, 2013 at 12:41pm.

- Math -
**Steve**, Tuesday, February 5, 2013 at 2:20pminner diameter is 10.4

outer diameter is 11.2

A = π(25)(10.4+11.2) = 540π

- Math -
**Simon**, Wednesday, February 6, 2013 at 4:16amBt its ans is 1816.32cm^2

- Math -
**Simon**, Wednesday, February 6, 2013 at 4:34amPlz help me

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