hii! please help

The figure is a section of a conducting rod of radius R1 = 1.30 mm and length L = 11.30 m inside a thin-walled coaxial conducting cylindrical shell of radius R2 = 12.OR, and the (same) length L. The net charge on the rod is Q1 = +3.55 x 10 12 C; that on the shell is Q2 = -2.22Q1. What are the (a) magnitude E and (b) direction (radially inward or outward) of the electric field at radial distance r = 2.18R2? What are (c) E and (d) the direction at r = 5.04R1? What is the charge on the (e) interior and (f) exterior surface of the shell