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the lenght of the diagonal of a square is 22.what is the length of each side?

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c^2=a^2+b^2

square => a=b

c^2=a^2+a^2 = 2*a^2
c^2/2=a^2
a=sqrt(c^2/2)

[input]sqrt( 22^2/2 )[/input]

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