A smooth $($finished$),$ concrete$-$lined channel cross $-$section is shown in Figure $3.$ The slope is $2$ meters$/$kilometer$.$ Manning $n$ values are listed in Table $10\mathrm{.}1.$

What is the wetted perimeter $P$ when the flow depth is $1\mathrm{.}5m?$

What is the hydraulic radius $R_h$ when the flow depth is $1\mathrm{.}5m?$

What is the volume flow rate $Q$ when the flow depth is $1\mathrm{.}5m?$

What is the average velocity $V$ for this the flow?

What is the Froude number Fr for this condition?

Is the flow subcritical or supercritical?

Table $10\mathrm{.}1$

Values of the Manning Coefficient, $n($Ref$.6)$

$\backslash$table$[[$Wetted Perimeter,$n,$Wetted Perimeter,$n$