Can You Solve The Overlapping Squares Riddle?

Math
Thanks to Ohad from Israel for suggesting this problem! A square with side length 5 has its corner at the center of a square with side length 4. The two squares overlap, and the overlapping region has one side equal to 3 as shown in the diagram. What is the area where the two squares overlap?

My blog post for this video
https://wp.me/p6aMk-866

Websites consulted
https://math.stackexchange.com/questions/2776158/is-the-blue-area-greater-than-the-red-area
http://www.puzzles.com/puzzleplayground/SquareIntersection/SquareIntersectionSol.htm

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