Hello. I need help. The equation is V=k(R^2-r^2).K=554.1R=0.06 and r is changing at 0.003 mm per minute.I will rate you as helpful! Thank you

According to Poiseuille's laws, the velocity V of blood is given by V= k (R" -r") where R is the radius of the blood vessel, r is the distance of a layer of blood flow from the center of the vessel, and k is a constant. A patient takes blood vessel dilation medication so that her blood velocity is modeled by Poiseuille's law with k = 554.1. Find the rate of change of the blood velocity when R = 0.06 mm and R is changing at 0.003 mm per minute. Assume r is constant. The blood velocity is increasing at mm per minute each minute. (Round to the nearest thousandth as needed.)