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March 28, 2017

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A painter leans a 20-ft ladder against a building. The base of the ladder is 12 ft from the building. To the nearest foot, how high on the building does the ladder reach?

  • geometry - ,

    This forms a right angle triangle.

    a^2 + b^2 = c^2

    a^2 + 12^2 = 20^2

    a^2 + 144 = 400

    a^2 = 256

    a = 16

  • pre algrbra - ,

    a=16

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