A thick cylinder is $100$ mm outer diameter and $50$ mm inner diameter. It is pressurised to $112$ MPa gauge on the inside. Calculate the following. Take E $=205$ GPa and $=0\mathrm{.}27$

$$ The circumferential stress on the outside layer

$$ The circumferential stress on the inside layer

$$ The longitudinal stress

$$ The circumferential strain in the outside layer

$$ The circumferential strain in the inside layer

The change in the inner diameter