Suppose that the aorta has a radius of about 1.25 cm and that the typical blood velocity is around 30 cm/s and that it has an average density of 1050 kg/m^3. If the blood in the circulatory system goes through the capillaries, what is the total cross-sectional area of the capillaries if the average velocity of the blood in the capillaries is 0.03 cm/s? a.

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Variation of pressure

From the equation of pressure, pressure is directly proportional to the applied force.