Question

please help me solve this problem.
A heart attack victim is given a blood vessel dilator to increase the radii of the blood vessels. After receiving the dilator, the radii of the affected blood vessels increase at about 1% per minute. According to Poiseulle's law, the volume of blood flowing through a vessel and the radius of the vessel are related by the formula V = kr4 where k is a constant. What will be the percentage rate of increase in the blood flow after the dilator is given?

Answer 1

a 1% increase in diameter yields a 4.00% increase in flow, assuming constant pressure

Answer 2

thanks dear