Posted by Sarah on Tuesday, August 3, 2010 at 9:04am.
If the diagonal of a square has a length of square root of 30, what is the square's area?

geometry  Reiny, Tuesday, August 3, 2010 at 9:15am
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?