A wall is supported by a brace 10 feet long. If one end of the brace is placed 6 feet from the base of the wall, how many feet up the wall does the brace reach?

Think of the right triangle frmed by the wall, the floor and the brace, and use the Pythagorean theorem. The brace is the hypotenuse

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  1. this is a Pythagorean triple
    ... in this case a 3-4-5 , multiplied by 2 ... 6-8-10

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