P$-4$ fuel $($SG $=0\mathrm{.}77)$ flows rough the Venturi meter hown in the figure below with a velocity Vo$=14\mathrm{.}8$ ft$/$s in the d$1=6\mathrm{.}00-$in$.$ pipe. In viscous effects are negligible, determine the elevation, h$,$ of the fuel in the open tube connected to the throat of the Venturi meter. Assume h$1=7\mathrm{.}70$ in$.,$ h$2=5\mathrm{.}70$ ft$,$ d$2=4\mathrm{.}00$ in$.$