Answer: pi(160) or 160 pi
Step-by-step explanation:
First find the area of the whole circle.
A=pi(r^2)
A=pi((18+4)^2)
A=pi(484)
Next find the area of the none shaded circle.
A=pi(18^2)=pi(324)
Then subtract to get pi(160)
Answer:
she giotu htcg
