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28 January, 23:44

A 10 foot ladder is leaning against a house. The base of the ladder is 4 feet from the house. How far does the ladder reach up the house?

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  1. 28 January, 23:53
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    Answer: 9.17 feet

    Step-by-step explanation:

    Use the Pythagoras theorem,

    a^2 + b^2 = c^2

    You are give c and b (because one side is slanted, so c) so rearrange to get

    c^2-b^2 = a^2

    10^2 - 4^2 = 84

    Square root 84 to get

    9.16515
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