A strain gauge is bonded at mid-length on the outside of the steel LPG cylinder in the figure, with its grid along the circumference. When the cylinder is filled, the gauge reads the hoop strain shown. Treating the cylinder as a thin closed cylinder (use the mean diameter and the data on the figure), determine (a) the gauge pressure inside the cylinder (answer in MPa), (b) the hoop stress in the wall (answer in MPa) and (c) the strain that a second gauge aligned with the cylinder axis would read (answer in µε, i.e. × 10^{−6}).