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What is the relation between coefficient of area expansion(A) and coefficient of volume expansion(B)?

What is the relation between coefficient of area expansion(A) and coefficient of volume expansion(B)? Correct Answer B = 1.5A

Let the coefficient of linear expansion be α. The coefficient of area expansion is 2α and the coefficient of volume expansion is 3α. ∴ The coefficient of volume expansion is 1.5 times the coefficient of area expansion ∴ B=1.5A.

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