Answer:
7
Step-by-step explanation:
did the math
I'm guessing the answer is B? I tried to isolate r and I got that result. Sorry if it's wrong!
Shaded area = Circle area - Rectangle area
Shaded area = 3.14 × (4)^2 - 5 × 6
Shaded area = 3.14 × 16 - 30
Shaded area = 50.24 - 30
Shaded area = 20.24
Shaded area = 20.2