The charge density on a disk of radius R

The charge density on a disk of radius R = 12.4 cm is given by ar, with a = 1.46 pCIm3 and measured radially outward from the origin (see figure below): What is the electric potential at point A, a distance of 50.0 cm above the disk? Hint: You will need to integrate the nonuniform charge density to find the electric potential. You will find table of integrals helpful for performing the integration 507.0919 X Your response differs from the correct answer by more than 100%. V