$4\mathrm{.}2)$ Brine flood in a $1\mathrm{.}9in.$ long and $1\mathrm{.}5in.$ diameter core plug from the North Sea

resulted in a stabilized pressure drop of $46\mathrm{.}05.$ The flood was carried out at

$0\mathrm{.}05m\frac{L}{m}in$ with brine viscosity of $0\mathrm{.}443cP.$ Determine the absolute perme$-$

ability of this plug in millidarcies.