Extracted text: This figure shows typical stress-strain behaviour for a brass. The inset figure shows the behaviour at low strains. 500 70 Tosle strength 450 MPa 166,000 ps 60 400 300 MP 40 30 200 Yeld steg 250 MPa (,0a 200 20아 100- 20 100 10 0.20 030 040 If the cylindrical test sample is initially 14cm long with an initial radius of 2mm, estimate the true stress in MPa at the ultimate tensile stress. (Enter your answer to the nearest whole number) an es