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13 December, 22:33

Find the value of the circumference of a circle with the given diameter.

3.21 ft.

C =

A = 1.61 pi

B = 3.21 pi

C = 6.42 pi

+2
Answers (1)
  1. 13 December, 22:52
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    C = 2πr, and 2r = D (diameter). So, you can also use this equation: C = D π

    Since we know the diameter, and we know the value of π, we can easily calculate the value of circumference.

    C = D π

    C = 3.21 π

    This means that the correct answer is B. 3.21 pi
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