Please answer with correct and step by step solution. Please include necessary free body diagrams. Kindly take note of the given values in red.

The AM1004-T61 magnesium alloy tube AB is capped with a rigid plate E. The gap between E and end C of the 6061-T6 aluminum alloy solid circular rod CD is 0.2 mm when the temperature is at 30" C. Determine the normal stress developed in the tube and the rod if the temperature rises to 80" C. Neglect the thickness of the rigid cap. 25 mm 20 mm Section a-a E C D B X mm a 0.2 mm - V mm Y mm values: V=202mm X=93mm Y=293mm