A thin walled pressure vessel with inner radius 36 inch and wall thickness of 1.5 inch is used to store a medium exerting an internal pressure p = 1000 psi. The pressure vessel happens to contain two non-interacting (i.e., one crack does not influence the stress field of the other crack) through-thickness cracks. Both cracks are of length 2 inch but oriented differently. One crack is located along the circumferential direction (circumferential crack) and the other is oriented along the axis of the pressure vessel (axial crack). a. Schematically sketch (hand draw) these cracks showing the relevant dimensions. b. Determine the stress intensity factors K, for the two cracks.