Question :- Find the circumference of a circle known that area of the circle is 153.86 ?

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- Jun 25th 2013, 01:49 AMbrosnan123Circumference of a Circle
Question :- Find the circumference of a circle known that area of the circle is 153.86 ?

- Jun 25th 2013, 02:20 AMdownthesun01Re: Circumference of a Circle
The circumference of a circle is

The area of a circle is

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