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2 January, 14:41

a 12 ft ladder leaning against a wall at a right angle. how far does the ladder reach at a right angle?

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  1. 2 January, 14:46
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    C=12

    B=2.5

    A squared + 2.5 squared = 12 squared

    A squared + 6.25squared = 144

    A squared = 137.75

    A = + - square root 137.75

    A= + - 11.74 ft
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