A cylindrical shell 3 m long which is closed at the ends has an internal diameter of 1 m and a wall thickness of 15 mm. Calculate the circumferential stress if it is subjected to an internal pressure of 1.5 MN/m2
1
62 MN/m2
2
50 MN/m2
3
14 MN/m2
4
26 MN/m2