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31 March, 10:40

Jack has to paint the wall of his bedroom so he used a ladder. he placed the ladder 10 feet from a wall. the ladder reaches 13 feet up on the wall. find out how long is the ladder.

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  1. 31 March, 10:58
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    Use Pythagorean theorem to solve for for the hypotenuse of the triangle. The base (b) is 10 and the height (a) is 13, solve for c. c^2 = a^2 + b^2
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