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+clc
+//initialisation of variables
+v=4*10^-7//m^2/s
+t=1/60//min/s
+v1=4.3*10^-6//ft^2/sec
+q=10*10^-2
+p=300//m
+p1=1000*10^-3//m^3
+r1=0.000046//m
+w=0.10//m
+f=0.0175//m
+g=9.8//m/s^2
+v3=2.02//m/s
+p2=20//m
+//CALCULATIONS
+V1=(4*(p1)*t)/((%pi)*(q)^2)//m/s
+Nr=(V1)*(q)/(v)
+R=r1/w
+hf=(f*p*(v3)^2)/(q*2*g)//m
+ha=p2+(V1^2)/(2*g)+hf//m
+//RESULTS
+printf('The pressure at the pump outlet to maintain the flow secified is=% f m',ha)