A sphere of radius 416cm and uniform surface charge density

Question

Question: A sphere of radius 4.16cm and uniform surface charge density +11.2 µC/m² exerts an electrostatic force of magnitude 4.52 x 10^-2 N on a point charge +1.30 µC.

Part A: Find the separation between the point charge and the center of the sphere.

Thanks in advance that solve the above question.