geometry

If the diagonal of a square has a length of square root of 30, what is the square's area?

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asked by Sarah
  1. let each side be x
    so the area would be x^2

    then x^2+ x^2 = (√30)^2
    2x^2 = 30
    x^2 = 15

    wow , wasn't that easy?

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    posted by Reiny

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