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23 September, 20:38

What is the circumference of a circle whose area of 121 pi square meters?

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Answers (2)
  1. 23 September, 20:45
    0
    Answer: about 69

    Step-by-step explanation:

    you have to work in reverse

    Area = (pi) r^2

    because this equalled 121, the radius has to be 11.

    SO, we can use the radius to find the circumference

    Circumference = 2 (pi) r

    Circumference = 22pi which is 69.08
  2. 23 September, 20:56
    0
    C=22pi or 69.115 ...

    Step-by-step explanation:

    A=pi r^2

    solve r=11

    C=2pi r

    C=22pi
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