A farmer is to pump water at $20C$ fro storage tank nearby using a $38m$ long, $0\mathrm{.}13m$ diver to a water pipe with three flanged $90$ smooth bends. The watiameter plastic the river surface is $1\mathrm{.}8\frac{m}{s},$ and the pipe inlet is velocity near normal to the flow direction of water to take placed in the river dynamic pressure. The elevation difference take advantage of the the free surface of the tank is $3\mathrm{.}66m.$ For a the river and $\frac{m^3}{m}in$ and an overall pump efficiency of a flow rate of $2\mathrm{.}5$ the required electric power input to the pump. $70$ percent, determine dynamic viscosity of water at $20C$ are $=998k\frac{g}{m}3$ and $=1\mathrm{.}002{10}^{-3}k\frac{g}{ms}.$ The roughness of galvanized iron pipe is $=1\mathrm{.}510-4,$ standard flanged $90$ smooth elbows $(KL=0\mathrm{.}3$ each$),$ and a sharp$-$edged exit $)=(1\mathrm{.}0.(40$ p$.)($Please solve with number dont explain how solve $)$