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1 September, 22:03

A 20-ft ladder is leaning against a house. The bottom of the ladder is 4-ft from the house. To the nearest tenth of a foot, about how high does the top of the ladder reach

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  1. 1 September, 22:35
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    The high is 19.6ft

    Step-by-step explanation:

    Using Pythogaras' Theorem:

    √ (20² - 4²) = 19.6 ft (near. tenth)
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