On square A B C D point E lies on side \overline{A D} and point F lies on side \overline{B C}, so that B E=E F=F D=30. Find the area of square A B C D.
On square A B C D point E lies on side \overline{A D} and point F lies on side \overline{B C}, so that B E=E F=F D=30. Find the area of square A B C D.