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1 November, 05:00

Suppose the circumference of a circle is 2 pi what is the area?

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Answers (2)
  1. 1 November, 06:21
    0
    Circumference of a circle = 2 π r

    (where r is the radius)

    Area of a circle = π r^2

    (where r is the radius)

    you have to find the radius

    C = 2π unit

    r = 1 unit

    Area = π square units
  2. 1 November, 07:55
    0
    C = 2 * pi * r

    Plug in what we know:

    2pi = 2 * pi * r

    Divide 2 pi to both sides:

    r = 1

    (Remember, anything divided by itself is equal to 1)

    A = pi * r^2

    Plug in what we know:

    A = pi * 1^2

    A = pi * 1

    A = 1 pi

    So the area is '1 pi' or just 'pi'.
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