Answer
2√3
Step-by-step explanation:
we can say that the diagonal of a square is the hypotenuse of a 45-45-90 triangle, and its sides are the legs of the triangle
if it is the hypotenuse then it is in the form of √2x
√2x=√24
x=√12
√12=2√3
therefore the side of the square is 2√3