need help with part C please supply solution with 2 sig fig

Constants | Perio E = 44x10 4 V A hollow metal sphere has inner radius a, outer radius b and conductivity o. The current I is radially outward Submit Previous Answers from the inner surface to the outer surface. Correct Part C Evaluate the electric field strength at the outer surface of a copper sphere if a = 0.90 cm b = 3.0 cm, and I = 27 A Express your answer to two significant figures and include the appropriate units. HA x. 1On Value Units Submit Previous Answers Request