Answer:
Step-by-step explanation:
All side lengths of a square are equal. The three squares create a right triangle, and the hypotenuse of this triangle represents the side length of the square.
All right triangles must follow the Pythagorean Theorem where
is the hypotenuse of the triangle.
Therefore, let be the side length of this largest square. Since the area of a square with side length
is given by
,
will represent the area of the square: