hey guys i have tried this problem many times and cant figure out the answer. please help Heres the problem: Figure 12-56 shows the stress versus strain plot for an aluminum wire that is stretched by a machine pulling in opposite directions at the two ends of the wire. The scale of the stress axis is set by s = 5.50, in units of 10^7 N/m2. The wire has an initial length of 0.950 m and an initial cross-sectional area of 2.50 × 10^-6 m2. How much work does the force from the machine do on the wire to produce a strain of 1.90 × 10^-3? This is my work: W=.5(stress)(strain)(volume) volume=(area)(lenght) And i get .124094. What am i doing wrong?