# 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 #13 #, #9 #, and #3 #, respectively. What is the rectangle's area?

##### 1 Answer

Apr 25, 2018

#### Explanation:

As is my practice, I'm converting to standard notation where triangle sides are small letters

**A right triangle has hypotenuse #a# and sides #b#, #c#. Side #b# forms a rectangle with another length #d#. Given #a=13, c=9, d=3# what is the area of the rectangle?**

The area we seek is