3.11.9. A 34mhigh water tower supplies drinking water (20C) to a residential area with a 20cm diameter, 800-m-long (horizontal) commercial steel pipe. To increase the pressure head at the delivery point, engineers are considering replacing 94% of the pipe length with a larger ( 30 -cm-diameter) steel pipe and a 30 confusor that connects to remainder of the smaller pipe. If the peak water demand is 0.10m3/s, determine the pressure head that would be gained by this strategy