A steel bar 35 mm X 35 mm in section and 100 mm in length is acted upon by a tensile load of 180 kN along its longitudinal axis and 400 kN and 300 kN along the axes of the lateral surfaces. Determine (i) change in the dimensions of the bar (ii) change in volume (iii) longitudinal axial load acting alone to produce the same longitudinal strain as in (i) E