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What is the correct answer?
4
When a thin cylindrical shell is subjected to an internal pressure, the volumetric strain is (where ε₁ = Hoop strain, and ε₂ = Longitudinal strain)
A.
2ε₁ - ε₂
B.
2ε₁ + ε₂
C.
2ε₂ - ε₁
D.
2ε₂ + ε₁
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