Solution of independent work 4 variant 8 Setkov VI

The solution of the task for independent work 4 variant 8 from the collection of technical mechanics Setkov VI:

Select the cross-section of the suspension rod (or column) supporting the bar AB according to one of the variants shown in Fig.
Material of the rod for shaped profiles - rolled steel C-245, for round section - reinforcing steel, hot-rolled A-1