Answer:
C
Step-by-step explanation:
1. 12+6 = 18 so that's the diameter of the big circle
2. next we take the square of 18 and multiply it by pi (324x3.14)
3. answer: 1017.36
254.34
12 + 6 = 18/2 = 9
A=πr2=π·92 ≈ 254.34
