Answer:
the triangular portion is 12 ft.
Explanation:
one side is 4 feet (2+2) 3 (10-7) and then to find the hypothenuse you do a squared+ b squared = c squared. so 4 squared + 3 squared = the square root of 25.
The square root of 25 is 5
5+4+3=12
Hope this helps you!