Water flows in a $1\mathrm{.}2-$m$-$diameter finished concrete pipe so that it is completely full and the pressure

is constant all along the pipe. If the slope is $S_0=0\mathrm{.}0048,($a$)$ determine the flowrate by using open$-$

channel flow methods. Compare this result with $($b$)$ that obtained using the pipe flow methods of

Chapter $8($Use Colebrook formula, Table $8\mathrm{.}1,$ Table $10\mathrm{.}1$ and assume that $Re>{10}^6).$

$($a$)O=$