Answer: 404.5
Explanation:
From the diagram below, since it is a square, x= x.
Using Pythagoras formula, the hypotenuse= 572
572² = x² + x²
572² = 2x²
327184 = 2x²
Divide through by 2
163592 = x²
Taking the square root of both side
√163592 = √x²
x = 404.46
x = 404.5.