A trapezoidal channel with bottom width of 4.00 feet and side slopes of 2 horizontal to 1 vertical carries a flow depth of 2.25 feet at an average velocity of 7.32 ft/s. What is the flow, Q, in the...

A trapezoidal channel with bottom width of 4.00 feet and side slopes of 2 horizontal to 1 vertical carries a flow depth of 2.25 feet at an average velocity of 7.32 ft/s. What is the flow, Q, in the channel?

Refer to the cross section shown in problem 13 in Chapter 6. If the channel has a uniform earth section with short grass and a few weeds and the slope is 2.25 percent, what are (a) the discharge and (b) the velocity?