The figure below shows a long conducting coaxial cable and gives its radii (R₁=0.12m, R₂=0.62m, R₃=1.11m). The outer cable has a uniform current density of J=113A/m², and the inner cable carries a current I=19.8A flowing in opposite direction. Assume that the currents in each wire is uniformly distributed over its cross section. Determine the magnitude of the magnetic field in terms of U0 at a distance r=0.93m from the center of the cable. Express your answer using one decimal place.

R I R2 R3