$(25)5.$ In the rectangular chamber below, pipe $1$ has a diameter of $102$ mm and the flow is

$0\mathrm{.}0567($m$^(3))/($s$).$ Section $2$ has a diameter of $76$ mm and the flow velocity is $11($m$)/($s$).$

Calculate the average velocity in pipe $3$ if the diameter is $25$ mm $.$ Is the flow of water

in pipe $3$ in or out of the chamber?