A right triangle has sides A, B, and C. Side A is the hypotenuse and side B is also a side of a rectangle. Sides A, C, and the side of the rectangle adjacent to side B have lengths of #10 #, #3 #, and #3 #, respectively. What is the rectangle's area?
then by the Pythagorean Theorem
Therefore the rectangle has sides with lengths
and an area of