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1 November, 14:25

A 12-foot ladder rests against the side of a house. The base of the ladder is 3 feet away from the side of the house. How high above the ground is the top of the ladder? Round to the nearest tenth of a foot.

A.) 9.1 feet

B.) 11.6 feet

C.) 12.4 feet

D.) 153 feet

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  1. 1 November, 14:27
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    Using the pythagorean theorem: c^2 = a^2 + b^2

    c = 12 feet

    a = 3 feet

    b = x feet

    12^2 = 3^2 + x^2

    144 = 9 + x^2

    144 - 9 = x^2

    135 = x^2

    x = 11.6 feet

    Therefore, the answer is B.
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