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3 years ago

8

The area of a circle is 49π in². What is the circumference, in inches? Express your answer in terms of \piπ.

1 answer:

MaRussiya [10]3 years ago

8 0

area of circle = π r²

π r²= 49 π

r²= 49 r= √49 r= 7

circumference of circle = 2 π r

= 2×7 × π

= 14 π

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