(a) Determine the principal moments of inertia of the Z-section illustrated and show the Imax and Imin axes in the correct orientation on a sketch of...

(a) Determine the principal moments of inertia of the Z-section illustrated and show the Imaxand Imin axes in the correct orientation on a sketch of the section. (b) If the section issubjected to an internal moment of M = 250 kN.m directed horizontally as shown, determinethe stress produced at point A.