Type the correct answer in the box.
A line runs rightward from point A through points D and E. Another line rises to the right from point A through points B and C. Side A B is 5,600 feet, side B C is 7000 feet, side A D is 5,200 feet, and side A E is unknown.
An airplane takes off from point A in a straight line, as shown in the diagram.
The distance from A to E is feet.