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+
+clc
+//initialisation of variables
+h= 28 //ft
+g= 32.2 //ft/sec^2
+v1= 45.4 //ft/sec
+A= 45 //degrees
+Q= 1700 //ft^3/sec
+w= 6.24 //lb/ft^3
+c= 0.65
+a= 60 //ft^2
+r1= 10 //in
+r2= 5 //in
+//CALCULATIONS
+V= v1-(Q/(w*a*c*tand(A)))
+e= h*g*100/(V*v1)
+a1= atand(Q*2/(v1*w*a*c*tand(A)))
+w= sqrt(2*g*h*144/(r1^2-r2^2))*30/%pi
+//RESULTS
+printf ('Efficiency = %.1f per cent',e)
+printf ('\n Inlet angle = %.1f degrees',a1)
+printf ('\n Least speed of starting = %.f r.p.m',w-2)