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July 29, 2014

July 29, 2014

Posted by **Lori** on Saturday, November 21, 2009 at 11:56am.

Find the exact length of the side of a square whose diagonal is 3 feet.

I am having problems understanding how you figure out this problem. Can someone help me? Thanks.

- College Math II -
**drwls**, Saturday, November 21, 2009 at 12:10pmDraw a square. Draw a diagonal. Let each side length be x.

The Pythagorean theorem tells you that x^2 + x^2 = 2x^2 = 3^2 = 9

Solve for x.

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