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Math Help - Circumference of a Circle

  1. #1
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    Circumference of a Circle

    Question :- Find the circumference of a circle known that area of the circle is 153.86 ?
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  2. #2
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    Re: Circumference of a Circle

    The circumference of a circle is 2\pi r

    The area of a circle is \pi r^2

    You know that the area of the circle is equal to 153.86.

    Using the above formula for the area a circle, you should be able to find the radius (r), and plug it into the formula for the circumference of a circle
    Thanks from Shakarri
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