Answer:
2π r = Circumference formula
2π r = 18
r = 18/2π
r= 2.86cm
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Answer:
2.87 is the approximate radius
Step-by-step explanation:
The circumference is given by
C = 2 * pi *r
18 = 2 pi r
Divide each side by 2pi
18/2pi = 2 pir/ 2pi
9/pi = r
Letting pi be approximated by 3.14
9/3.14 = r
2.866242038
2.87 is the approximate radius
