at a location $($x$1,$y$1,$z$1)=(1000$m$,800$m$,120$m$)$ the pressure head is $130$ m and the hydraulic gradient is I $=0\mathrm{.}001$i $-0\mathrm{.}008$j $+0\mathrm{.}05$k$.$ what are the hydraulic head and pressure $($in pa$)$ at location $($x$2,$yz$,$z$2)=(2000$m$,-200$m$,220$m$)$ if the head gradient is assumed to be uniform? the specific weight of water is $9810$ N$/$m$3$