A cylindrical shell of radius 8.4 cm and length 262 cm has its charge density uniformly distributed on its surface. The electric field intensity at a point 28.3 cm radially outward from its axis (measured from the midpoint of the shell) is 40000N/C. Given: k = 8.99109 N.m2/C2. What is the net charge on the shell? Answer in units of C.