Answer:
10.39 or √108
Step-by-step explanation:
All sides in a square are congruent and the area is l×w. so sides must be √54. then using Pythagorean formula.
[tex] { \sqrt{54} }^{2} + { \sqrt{54} }^{2} = {c }^{2} [/tex]
then you get 108=c^2 so you take the square root of both sides. leaving c=√108 or about 10.39
