1. A compound tube is formed by shrinking together two tubes with common radius 300 mm andthickness 30 mm. The stress due to shrinkage at the interface 12 MPa. The compound tube is thensubjected to an internal pressure of 70 MPa. Assume young's modulus and poisson's ratio to be200 GPa and 0.3. a) Calculate the hoop and radial stresses in the cylinders. b) Sketch the stress distribution along a radius. c) Calculate and compare the stresses with that of a single tube cylinder.