Answer :
Answer:
B
Step-by-step explanation:
Since the figure was not supplied, let's focus on that principle.
To calculate it simply subtract the area of the square minus the area of the circle. Given the side of the square 20 ft
1. Square Area
[tex]S= s^{2}\\S=20^{2} \Rightarrow S=400 ft^{2}[/tex]
2.Circle Area
Notice the radius is half the square side, i.e. 10 ft
[tex]S=\pi*R^{2}\\S=3.14*(10)^{2}\\S=314 \:ft^{2}\\[/tex]
Subtracting the area of the square and the area of the circle:
[tex]400-314=86 ft^{2}[/tex]
