4. Consider a cylinder filled with two different color fluids and rotating counterclockwise. The radius of the inner cylinder is 2-m, and the outer cylinder radius is 4-m. The distribution of tangential velocity is given by the formula V = A/r where A = 10 m² s−1. a. What is the average vorticity of the fluid in the inner annulus? b. What is the average vorticity of the outer fluid? 4-m