Answer:
113.04 (estimated)
Explanation:
I used the formula that includes pi.
basically multiply the radius by 2 and multiply the answer with π or 3.14 for the estimation.
(sorry I couldn't show the work it's pretty dark-)
C = 2 π r
Your answer is 2 pi/π r.
The formula of a circumference is always 2 pi r.
18 x 3.14 x 2 = 113.04
in this case radius is 18
pi is 3.14
2 is just always there when finding out circumference.
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