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What is the approximate length of the diagonal of a square if the perimeter of the square is 12ft?
a. 1.7ft
b. 3.5ft
c. 4.2ft
d. 12.7ft
and how?I was confused on this question I tried to subtract and divide but nothing work.

  • Math -


  • Math -

    Erin is wrong.

    12/4 = 3

    a^2 + b^2 = c^2
    3^2 + 3^2 = c^2
    9 + 9 = 18

    What is the square root of 18?

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