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## Homework Statement

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?

## Homework Equations

Q=vA

v1=12m/s

v2=22m/s

A2=0.180982 m

^{2}

A1=0.3318 m

^{2}

## The Attempt at a Solution

This question is the third question from a 3 part problem. In the first two part they were asking me to find the velocity of position 2 of the pipe which is 22m/s, in the second part they were asking me for the diameter of position 2 in the pipe which is 48 cm and in this third part they are asking me how long does it take to fill in the tank with 180 m

^{3}.

My attempt was using volumetric flow, but which end should I use? v1a1 or v2a2 since they don't mention where is the tank located at.

any hints to where to start from?