Answer:
310.23
Step-by-step explanation:
circumference is radius * 2
to get radius from circumference, divide circumference by 2
18.84 / 2 =9.42
area for circle:
pi * r^2
3.14 * 9.94^2
3.14 * 98.8
310.23
If you work out the difference between 2 and 7 you will get 4 so you add 4 each time.
3=12
4=16
5=20
My guess would probably be A = 21
Answer: do you have a calculator, if you dont just look it up -.-
Step-by-step explanation: (sorry if this sounds rude, im not trying to be)