The formula for the circumference of a circle is C = 2(pi)r
Fill in given information and solve for r:
88pi = 2 * pi * r
1/2 * 88pi = 1/2 * 2 * pi * r
44pi = pi * r
44pi/pi = (pi * r)/pi
44 = r
The length of the radius of the circle is 44 cm long. I hope this helps!!