Need help please solve

@A sphere of radius R = 0.255 m and uniform charge density E 755 nC/m? lies at the center of a spherical, conducting shell E of inner and outer radii 3.50R and 4.00R, respectively. The = conducting shell carries a total charge of O = 14.3 nC, Macm Determine the magnitude E (r) of the electric field at the given radial distances r from the center of the charge distribution. E(0.560R) =| 23123.126 N/C Incorrect E(3.60R) = 0 N/C