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When a thin cvlindrical shell is subjected to an internal pressure, the volumetric strain is (where ε1 = Hoop strain, and ε2 = Longitudinal strain)

2ε1 - ε2
2ε1 + ε2
2ε2 - ε1
2ε2 + ε1

Correct Answer: 2ε1 + ε2

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