please do problem 5 on excel 

A 8-m wide rectangular channel carries a flow of 96 m3/s at a flow depth of 4 m. Thechannel width is constricted to 6 m in a length of 5 m. Assuming the channel transitionhas straight and vertical sides, and there are no losses, plot the water-surface profile in thetransition. Hint: you should find the water depth when the channel width is 8 m, 7.5 m, 7m, 6.5 m, and 6 m.