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posted by rose on Tuesday, June 19, 2012 at 11:18am.
how far from the wall should he place the ladder? If his ladder is 13 feet long and has to reach a 12 feet window.
hard way: 12^2 + d^2 = 13^2 d = 5 easy way: recognize that you have a 5-12-13 right triangle.
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