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geometry

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AB is 9cm and AC is 19cm calculate the lenght of BC if the angle is a 90 degress

  • geometry - ,

    Pythagorean theorem:

    a^2 + b^2 = c^2

    9^2 + 19^2 = c^2
    81 + 361 = c^2
    442 = c^2
    21.0238 = c

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