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A lamp shade has a radius of 9 inches. What is the circumference of the top of the shade? Use 3.14 to approximate pi. Round your answer to the nearest whole number.

A lamp shade has a radius of 9 inches. What is the circumference of the top of the shade? Use 3.14 to approximate pi. Round your answer to the nearest whole number.
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2 votes
A lamp shade has a radius of 9 inches. What is the circumference of the top of the shade? Use 3.14 to approximate pi. Round your answer to the nearest whole number.

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User Yuri Nudelman
by
8.1k points

2 Answers

5 votes
C=2πr
or
C=πd

C=2×3.14×9
C≈56.52 inches, now we just need to round it up to get 57 inches. As a result, the circumference of the top of the shade is 57 inches. Hope it help!
answered
User Rjminchuk
by
8.2k points
4 votes
Circumference is diameter times pi, diameter is radius times 2.  The answer should be 57 inches.
answered
User Baelnorn
by
8.4k points
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