A 100-mm-long rod with a diameter of 15 mm is made of an elastic-perfectly plastic material with a yield stress of oy = 200 MPa, modulus of elasticity of E = 75 GPa, and Poisson's ratio of v=0.3. If it is loaded with an axial compressive load of 25 kN as shown below, determine its new diameter and enter it in mm correct to 6 significant digits below. Make sure you use at least 7 significant digits in all intermediate calculations so that you can get the final answer accurate to 6 significant digits. 25 KN Your Answer: 100 mm 15 mm Answer units 25 KN