# math

A ladder leans against a wall four feet above the ground. The base of the ladder is three feet from the wall. How long is the ladder?

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1. Use the Pythagorean theorem:

a^2 + b^2 = c^2

4^2 + 3^2 = c^2
16 + 9 = c^2
25 = c^2
5 = c

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Ms. Sue

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