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circles

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What is the area and circumference of a circle with a radius of 3in.

  • circles -

    Like I said with awl, I found the circumference forumla, which is:

    c = pi times diameter
    OR
    c = 2 times pi times radius

    I can't find the area formula. :(

    Just place in 3 where I said "radius."

    Hope I helped! :)

  • circles -

    Area = pi * radius squared

    A = pi*r^2
    A = 3.14 * 9
    A = 28.26 square inches

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