23-02-2017
Mathematics

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A 20 foot ladder is leaned against a wall. If the base of the ladder is 8 feet from the wall, how high up on the wall will the ladder reach?

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23-02-2017

20^2=400
8^2=64
400-64=336
square root of 336 is 18.33, so the latter is aprox.18 feet up on the wall.

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