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December 21, 2014

December 21, 2014

Posted by **ke** on Wednesday, January 11, 2012 at 2:28am.

- math -
**Reiny**, Wednesday, January 11, 2012 at 8:52amw^2 + 15^2 = 20^2 ----- simple Pythagoras

w^2 + 225 = 400

etc

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