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what is the length of a diagonal of a rectangular picture whose sides are 3 inches by 4 inches

  • math -

    a^2 + b^2 = c^2

    3^2 + 4^2 = c^2

    9 + 16 = c^2

    5 = c

  • math -

    3 4 5 right triangle
    3^2 + 4^2 = 25 = 5^2

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