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| Math Central | Quandaries & Queries |
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Question from SteVonee, a student: Estimate the radius of a circle with the given circumference that is 192ft |
Hi SteVonee,
The circumference of a circle is given by
circumference = 2 π r
where r is the radius and π is approximately 3.1416. Thus you have
192 = 2 × 3.1416 × r = 6.2832 × r
What is r?
Penny
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