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April 25, 2014

April 25, 2014

Posted by **faye** on Tuesday, March 9, 2010 at 6:43pm.

- Calculus -
**MathMate**, Tuesday, March 9, 2010 at 8:05pmUse calculus to prove that the

*minimum*perimeter of a rectangle of area 100 square inches is 40 inches, and that happens when all the sides are equal, namely the rectangle is a square.

Therefore any other rectangle having a different perimeter cannot be a square.

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