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11 June, 19:42

A 18 -foot ladder is placed against a vertical wall of a building, with the bottom of the ladder standing on level ground 11 feet from the base of the building. How high up the wall does the ladder reach?

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  1. 11 June, 21:47
    0
    14.247 feet

    Step-by-step explanation:

    This can be solved by using pythagoras theorem

    c=18 feet

    b=11 feet

    a=?

    a=sqrt (18^2-11^2)

    =sqrt (324-121)

    =sqrt (203)

    =14.247 feet
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