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During laboratory testing of a 6-inch steel-alloy rod with a cross sectional area of 0.32in², a...

During laboratory testing of a 6-inch steel-alloy rod with a cross sectional area of 0.32in², a tensile load of 40,000 lbs is applied. If the cross sectional area decreases to 0.3188in² and lengthens to 6.021 inches, what is the Poisson’s Ratio?

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