An open-end cylinder with inner and outer diameters of 2a=30mm and 2b=60 mm, respectively, is subject to a uniform temperature change from 25 C to 45 C. Assuming the cylinder is rest on a table and free to move, determine the stress and final dimensions (i.e. length, outside diameter, inside diameter) of the cylinder. Length 20 cm, alpha = 0.0000117 per degree C.