I need help ASAP!!!! The answer is NOT $18\mathrm{.}2$ m

A cast iron pipe having a diameter of $100mm$ is used to fill the empty cylindrical tank with water at $T=25C.$ The pipe has a total length of $50m.$ Neglect minor losses. Use an iterative trial$-$and error procedure. For the first iteration assume that $f=0\mathrm{.}025.$ Use the equation $\frac{1}{\sqrt[\phantom{2}]{f}}=-1\mathrm{.}8log[(\frac{\frac{}{D}}{3\mathrm{.}7}{)}^{1\mathrm{.}11}+\frac{6\mathrm{.}9}{Re}]$ to determine $f.$ Indicate your answer for the second iteration.

Part A

If the power output of the pump is $4\mathrm{.}5kW,$ determine the depth $h$ of the water in the tank $2\mathrm{.}5$ minutes after the pump is turned on$.$