1. write in standard form
2. group like terms
3. combine like terms
4. distribute the negative
C = 2 pi r given r = 4
so
C = 2 pi (4)
C = 8 pi
answer
C. C = 8pi
Answer:
Two and hundredths
Step-by-step explanation: I'm in college so I think I am capable of answering a middle school question thank you very much, and make sure to mar me brainliest.
hopefully this will help :)