First you would find the area of the triangle which would be 84×92 then divide that answer by 2. Then you will find the area of the circle using the given radius 20.5. Lets work it out. 84×92=7728 7728÷2=3864 ft² 3864 ft² is the area of the backyard including the pool. A=pi(20.5)² A=1320.25 ft² 1320.25 ft² is the area of the pool. Now we have to subtract to get the area of the backyard without the pool. 3864-1320.25=2543.75 ft² 2543.75 ft² is your answer. Hope This Helps and God Bless!
