please answer the question below

A plastic disk of radius R = 42.7 cm is charged an one side with a uniform surface charge density 4.99 fC/rn2, and then three quadrants ot the disk are removed. The remaining quadrant is shown in the figure. With V = O at infinity, what is the potential in voets dua to the remaining quadrant. at point which is on the central axis of the original disk at distance D = 0.0960 cm fram the original center? Number Units