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A ladder 8ft long leans against a wall. It rests on the ground 2ft from the wall. How high on the wall does the ladder reach?

  • math -

    Use the Pythagorean Theorem. Let a = the height on the wall.

    a^2 + b^2 = c^2
    a^2 + 4 = 64
    a^2 = 60
    a = 7.75 feet

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