(3) A steel bar of circular X-section is subjected to tensile loads, as shown above. Given that E=2.9 x 10^(6)psi, and v=0.29, find the change in the bar's volume due to this loading. (The dimensions shown are the initial dimensions, before the loads act.) You will need to use the definitions of normal and lateral strain, plus Hooke's law to find the final volume. You will need to calculate both initial and final volumes accurate to at least 6 significant digits in order to get the answer with sufficient accuracy.