Multiply the diameter of the circle by pi ( 3.142 )
What is the 60 inch measurement? Is it the radius, the diameter? The 60 inches could also be the circumerence, except that is what you are asking for.
a circle a circle a circle a circle
Concentric Circles?
Coca cola
The circumference of a circle is the distance arround the edge of the circle. The area of a circle is how big the inside of the circle is.