Finding the Radius of a Circle:
The radius of a circle is measured from the center of
a circle to a point on the circle. The radius is half
the length of diameter.
In this diagram the blue line 8.0, is the radius and red
line 16.0 is the diameter. You can see that the radius
is measured from the center of the circle and it is half
the length of the diameter.
There are three formulas you can use to find the