$($c$12$p$6)$ The air$-$conditioning system of a department store is designed to maintain a pressure of $0\mathrm{.}27$ in$.$ of water above atmospheric pressure. What is the net force due to pressure on a rectangular display window that is $2\mathrm{.}00$ m by $3\mathrm{.}00$ m$?($ First convert the pressure of $0\mathrm{.}27$ in$.$ of water to pascals.$)$