Let P be a point on the circle circumscribing square A B C D that satisfies P A \cdot P C=56 and P B \cdot P D=90. Find the area of A B C D.
Let P be a point on the circle circumscribing square A B C D that satisfies P A \cdot P C=56 and P B \cdot P D=90. Find the area of A B C D.