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The radius of a circle measures 13 ft. What is the circumference of the circle?

Use 3.14 for π, and do not round your answer. Be sure to include the correct unit in your answer.



Sagot :

Circumference : C=2*pi*radius~2*3.14*13=81.64 ft
i think the answer is 81.64 because   (2)(3.14)(r)= (2)(3,14)(13)