Given the following water surface $($WS$)$ elevation and pipe data $($length and diameter$)$:

$WS1=1,600m,L1=1,200m,D1=1\mathrm{.}2m$

$WS2=1,580m,L2=600m,D2=1\mathrm{.}0m$

$WS3=1,550m,L3=900m,D3=1\mathrm{.}5m$

Complete turbulence is assumed in all pipes. All pipes are rough concrete.

$($a$)$ Is the flow rate in Pipe $1$ equal to $8\frac{m^3}{s}?$ Use your calculations to support your answer.

$($b$)$ If your answer is $"$NO$"$ to question $($a$),$ what process you would like to take to derive the flow rate in Pipe $1?$