Answer:
The following are the answer to this question:
Step-by-step explanation:
In point a, Calculating the are of flow:


In point b, Calculating the wetter perimeter.


In point c, Calculating the hydraulic radius:


In point d, Calculating the value of Reynolds's number.



Calculating the velocity:



calculating the Cole-brook-White value:


After calculating the value of V it will give:

In point a, Calculating the value of Froude:



The flow is supercritical because the amount of Froude is greater than 1.
Calculating the channel flow rate.

