diameter increase or decrease?A cylindrical specimen of a hypothetical metal alloy is stressed in compression. If its original and final diameters are $30\mathrm{.}00$ and $30\mathrm{.}04$ mm$,$ respectively, and its final length is $105\mathrm{.}20$ mm$,$ compute its original length if the deformation is totally elastic. The elastic and shear moduli for this alloy are $65\mathrm{.}5$ and $25\mathrm{.}4$ GPa, respectively.