The area of a square is
2 time sqr 2 + 3

. what is the length of a side of
the
square?

Hope i understand it right 

2sqrt2 +3 is area of a square so this mean that side *side = 2sqrt2 +3

so s^2 = 2sqrt2 +3

s = sqrt(2sqrt2 +3)

hope this will help you 

I believe the answer is 12.50 , but I think you should double check. plz tell me if you need me to show you how to work it :)