1. The problem statement, all variables and given/known data The water from a pipe flows into a tank of volume 180 m^3. If the tank is initially empty, how long will it take to fill the tank? I know that water is coming out of the pipe with a velocity of 22 m/s, and the diameter of this end of the pipe is 48 cm. 2. Relevant equations This is what I don't know. Is it v1A1=v2A2? or p1+1/2ρv1^2+ρgy1=p2+1/2ρv2^2+ρgy2? 3. The attempt at a solution v1A1=v2A2 22 m/s*.10898 (A1)=0?