A rectangular block of rubber with dimensions $W=1\mathrm{.}6in.$ and $H=3\mathrm{.}2in.$ is distorted by moving the right side down $d=0\mathrm{.}5$ in$.$ Determine the resulting average normal strain

along diagonal $AB.$ Enter the average normal strain along diagonal $AB$ in in$./$in$.$ to the nearest $0\mathrm{.}001$ in$./$in$.$

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