1. The problem statement, all variables and given/known data A fluid of density 867 kg/m3 flows through a circular duct of diameter 40.60 mm with a mass flow rate of 14.63 kg/s. The fluid velocity in m/s is? 2. Relevant equations mass flow rate [kg/s] = density [kg/m3] x velocity [m/s] x area [m] 3. The attempt at a solution 14.63 = 867 x velocity [m/s] x pi(40.60/2000)^2 therefore: velocity = 13.03 m/s Though from my notes: Correct Answer: 1.190 m/s Am I doing something wrong or is the answer from my notes just wrong? Thanks in advance!