$(20$ pts$)$

Compute the a$)$ flow area, b$)$ wetted perimeter, and c$)$ hydraulic radius, d$)$ slope and e$)$

velocity of the rectangular concrete channel whose depth is $3$ feet and base is $10$ feet. $n=$

$0\mathrm{.}013$ and the flow length is $150ft$ with a $1ft$ elevation drop.

$(20pts)$

Compute the a$)$ flow area, b$)$ wetted perimeter, and c$)$ hydraulic radius, d$)$ slope and e$)$

flow rate of the rectangular concrete channel whose depth is $4$ feet and base is $12$ feet. $n$

$=0\mathrm{.}07$ and the flow length is $200ft$ with a $5ft$ elevation drop.