$($a$)$

$($b$)$

$2.$ A venturi meter having a throat diameter of $38\mathrm{.}9mm$ is installed in a line having an inside diameter of $102\mathrm{.}3mm.$ It measures water having a density of $999k\frac{g}{m^3}.$ The measured pressure drop across the venturi is $156\mathrm{.}9$kPa. The venture coefficient $Cv$ is $0\mathrm{.}98.$ Calculate the gal.$/$min$.$ and the $\frac{m^3}{s}$ flow rate.