3-22. The two bars are made of a material that has the stress-strain diagram shown. Determine the cross-sectional area of each bar so that the bars fracture simultaneously when the load P = 3 kip. Assume that buckling does not occur. σ (ksi) 555 15 10 25 20 5otension 3 ft compression 4 ft. B € (103) (in./in.) 0.20 0.40 0.60 0.75 Probs. 3-21/22