Situation $8$: A trapezoidal cannal has a width equal to $6m$ and a side slope of $1$:$1(1$ horizontal $1$ vertical$).n=0\mathrm{.}014$ and $S=0\mathrm{.}003$

$26.$ Compute the velocity of water in the cannal if the depth of water is $4\mathrm{.}1m$

$27.$ Compute for the depth on the canal if the if the discharge on the cannal is $25\frac{m^3}{s}$

$28.$ Compute for the critical slope

Situation $9$: A sewer pipe has a diameter of $900mm.$ the coefficient of roughness is $n=0\mathrm{.}015$ and slope of $0\mathrm{.}001$

$29.$ Compute the depth of water for max discharge

$30.$ Compute the max discharge