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28-01-2019
Mathematics

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The formula for the circumference of a circle is c=pi r where r is the radius and c is the circumference. The equation solved for r is r=c/2pi. Find the radius of a circle that has a circumference of 16pi.
A. r=4
B. r=8
C. r=12
D. r=16

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wegnerkolmp2741o wegnerkolmp2741o

28-01-2019

Answer:

B. r=8

Step-by-step explanation:

r=c/2pi

We are given c = 16 pi

r = 16pi / 2pi

The pi on the top and bottom cancel

r = 16/2

r =8

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