Water flows horizontally in a pipe of diameter 8.4 cm at a rate of 0.576 m/s and a gauge pressure of 5.40x10^3 Pa. The fluid (still in the pipe) then descends a 3.51 m high hill, passes through a reducer and into a smaller 4.84 cm diameter pipe, and then flows horizontally again. Determine the gauge pressure (in Pa) in the lower section of pipe.