A steel bar 5 m × 50 mm is loaded with 250,000 N. If the modulus of elasticity of the material is 0.2 MN/mm2 and Poisson’s ratio is 0.25, the change in the volume of the bar is_________________?
(A) 1.125 cm3
(B) 2.125 cm3
(C) 3.125 cm3
(D) 4.125 cm2
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