Q$2.$ A$\mathrm{.}5$ m$-$wide sinice gate with an opening of $10cm$ is discharging water at a rate of $3$

$\frac{m}{s}.$ Calculate the flow diseharge of the flow if the flow depth belnud the sluice gate is $3$

In and the downstream flow depth is $2$ In$.$ Coefficient of discharge $C_d=0\mathrm{.}585.$

$(3)$marks$)$