Answer:
56.52
Step-by-step explanation:
To find circumference you need the formula C=Pi times the diameter to find the diameter you multiply the radius by two and then you multiply that answer by pi or 3.14 and you get the answer 56.52
Answer:
18π or 56.54866776 (exact)
Step-by-step explanation: Use the equation C = 2πr
Substitute in your values
C = 2π x 9 (use pi unless told otherwise)
2π = 6.283185307
6.283185307 x 9 = 56.54866776
or
If you are supposed to keep in terms of pi:
2π x 9 = 18π
C = 56.54866776 or 18π
Hope this helps
