Water flows in a $1\mathrm{.}1-$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$0=0\mathrm{.}0051,($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 $>106).$