To find the radius of the circle,
remember that the formula for the circumference
of a circle is C = 2πr, where r represents the radius of the circle.
Since we're given that the circumference of our circle is 8π,
we can setup the equation 8π = 2πr.
Now to solve for r, we divide both sides of the equation by 2π.
On the right side, the 2's cancel and the π's cancel and we're left with r
and on the left side, the π's cancel and 8 divided by 2 is 4.
So we have 4 = r.
So the radius of the circle is 4 cm.