Problem $7\mathrm{.}7$

The hydraulic gradient $($i$)$ of the flow $=($express your answer with three decimal places$).$

The. cross$-$sectional area $A=m^2($express your answer as an integer$)$

The quantity of water that flows into the ditch $=\frac{m^3}{m}in($express your answer with three decimal places$).$