Homework Help: Geometry-8th gr

Posted by Mona on Friday, March 8, 2013 at 5:43pm.

The Circumference of a circle is equal to the area of the circle. Find the radius.

Thanks.

Geometry-8th gr - Dr. Jane, Friday, March 8, 2013 at 5:47pm
Circumference = 2 times pi times r
Area = pi times r-squared

If Area = Circumference, then..

(2)(pi)(r) = (pi)(r^2)

Divide both sides by r

2(pi) = (pi)(r)

Now, solve for r by dividing both sides by pi.
Geometry-8th gr - Mona, Friday, March 8, 2013 at 6:29pm
Thanks!

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