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geometry

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The top of a ladder is leaning on a building at a point 12 feet above the ground; the bottom of the ladder is 5 feet from the base of the building. What is the length of the ladder?

  • geometry -

    a^2 + b^2 = c^2

    12^2 + 5^2 = c^2

    144 + 25 = c^2

    169 = c^2

    13 = c

  • geometry -

    kkj

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