A circle is drawn with all it's points equidistant from a fixed point. The fixed point is called the center of the circle and the distance from the center point to the outside is called the radius.
[tex]Area = \pi *r^2[/tex]
[tex]r^2 = Radius [/tex]
[tex]45*6^2= New \ Area[/tex]
[tex]= 1620[/tex]
