Another math question... 10 points to BA?

Question

Find the radius and area of a circle with a circumfrance of 6pi ft. 10 points to best answer.

Answer 1

Since circumference is the diameter times pi and radius is half the diameter than the radius must be 3.  The area of a circle is r^2pi.  so it would be 3^2 pi or 9pi.  So R=3ft A=9pi