Kutukov B.N. 1990 Problem 4 option 007

For a given cross-section, consisting of a channel and an equilateral angle, or from an I-beam and an equilateral angle, or from a channel and an I-beam, it is required: 1) to determine the position of the center of gravity; 2) find the axial and centrifugal moments of inertia with respect to random axes passing through the center of gravity; 3) determine the direction of the main central axes; 4) find moments of inertia relative to the main central axes; 5) draw a section in the scale 1: 2.
DANI: I-bar No. 36; Corner number 125; 125 × 125 × 12. scheme 7