Pulmonary banding is performed in infants with congenital heart defects that make them susceptible to pulmonary hypertension. A band is placed around the pulmonary artery to induce a stenosis and thereby reduce flow and pressure in the pulmonary artery. For the following conditions, (b) Determine the area reduction (ratio of original area to the reduced area) needed to produce a pressure drop of 15mmHg. Flow rate: 2000cm3/min Upstream pulmonary artery diameter: 1.3cm Density of blood: 1070kg/m3 Conversion factor: 133.32Pa/mmHg Viscosity of blood: 0.0035Pas