Answer:
8
Step-by-step explanation:
I hope this helps you out!
So, I need more details, is 3.14 the radius or is 100 the radius. Or is it the diameter???
3 multiplied by 5 is 15 times 2 is 30 that should be ur answer
Do you have a specific equation I can help you with. I can explain them better with a problem to look at?