A packed column in gas chromatography had

an inside diameter of $5\mathrm{.}0mm.$ The measured

volumetric flow rate at the column outlet was

$36\mathrm{.}0m\frac{L}{m}in.$ If the column porosity was $0\mathrm{.}6,$

what was the linear flow velocity in $c\frac{m}{s}?$

$($Take $""$ as $3\mathrm{.}145$ in your calculation.$)$

$9\mathrm{.}1$

$5\mathrm{.}6$

$7\mathrm{.}4$

$5\mathrm{.}1$

$9\mathrm{.}5$

Other: