A horizontal pipe of diameter 1.08 m has a smooth constriction to a section of diameter 0.648 m. the density of oil flowing in the pipe is 821 kg/m³. if the pressure in the pipe is 8490 N/m² and in the constricted section is 6367.5 N/m², what is the rate at which oil is flowing?
A) 28.5 m³/s
B) 35.2 m³/s
C) 40.3 m³/s
D) 47.1 m³/s
