help please show detailed solution on white sheet of paper i will give upvote thank you

4. The figure below shows the cross-sections of the two infinite straight couaxial conductors. The conducting domains in the figure are represented by shaded regions. The inner conductor carries current I that is flowing into the page, while the outer conductor carries current I that is flowing out of the page. if the given currents are uniformly distributed within the volume of thelr corresponding conductlng bodies, what Is the magnetic field vector at polnt (U, r), where b