In the figure shown pipes are in parallel connection with properties given. If the flow into the system is 850lps with total head loss of 10 J/N. For the value of f=0.020 for all pipes, find the diameter of pipe 4.
Extracted text: Pipe No. Length - m Diameter - cm 1 1000 90 2 500 50 600 40 4 800 700 75 2 5