Posted by **m** on Wednesday, January 5, 2011 at 8:04am.

find the perimeter of a square with a diagonal of 6 square root 2 in.

I am not sure how to figure out this perimeter.

- math -
**Dr Russ**, Wednesday, January 5, 2011 at 8:10am
You are told it is a square so the sides are of equal length, a.

If we wanted to find the length of the diagonal of a square with sides length a, then

diagonal = sqrt(2a^2)

=6sqrt(2)

sqrt(2a^2)= 6sqrt(2)

2a^2 = 36 x 2

a^2 = 36

so a=6

now find the perimeter

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