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Alecsey [184]
3 years ago
15

Using the formula C = 2πr, find the circumference of a circle with diameter of 28 inches. Round your answer to the nearest inch.

A. 88 in. B. 44 in. C. 28 in. D. 56 in.
Mathematics
2 answers:
Stolb23 [73]3 years ago
8 0
The formula given to us relates circumference with radius but we are given diameter instead. good thing we know that diameter is twice the length of radius so if diameter=28, the radius=14. therefore, using our formula, we can find the circumference:
C = 2(pi)(14)
C = 87.96
and this answer is close to 88 so the answer is A

let me know if you have any questions!!!

LiRa [457]3 years ago
5 0
Hi there! C=πd=π*28=87.96459, 87.96 rounded to the nearest tenth would be 88. Therefore, your answer is A. 88 in
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