Middle School

Circle O has a circumference of approximately 44 inches.

What is the approximate diameter of Circle O?

A. 7 inches
B. 14 inches
C. 22 inches
D. 44 inches

Answer :

I think you are looking for the radius R.

For a cicle, the perimeter L=2×pi×R.

44=2×pi×R=2×3.14×R=6.28×R.

Thus we find: R=44/6.28=aprox 7in.

Answer: 7in - first option.

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