A steel block of size 300 mm X 150 mm X 100 mm subjected to load of 300 kN (tension) on 150 mm X 100 mm face, 500 kN (compression) on 300 mm X 150 mm face and 100 kN (tension) on 300 mm X 100 mm face. Determine change in volume if poisons ratio is 0.25, E = 2 X 10^5 MPa.