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17 August, 18:10

A ladder leans against a 15 foot tall building to for a right triangle. the ladder is places so it is 8 feet from the base of the building. what is the length of the ladder

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  1. 17 August, 18:30
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    Use pythagoras theorem

    l^2 = 8^2 + 15^2

    l = sqrt (289)

    = 17 feet
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