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A tensile strip of polystyrene that is 10 cm in length, 5 cm inwidth, and 2 cm in thickness is stretched to a length of

A tensile strip of polystyrene that is 10 cm in length, 5 cm inwidth, and 2 cm in thickness is stretched to a length of 10.5 cm.Assuming that the sample is isotropic and deforms uniformly,calculate the resulting width and the % volume change afterdeformation.

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