Question: Three point charges, -6.2 x 10-9 C, -8.5 x 10-9 C, and +6.3 x 10-9 C, are fixed at different positions on a circle. The total electric potential at the center of the circle is -2200 V.
Question 1: What is the radius of the circle?
Please explain all work and steps to determine the radius of the circle.