Continuity equation

Water flows in streamlines through a non-uniform pipe as shown below.

The water enters the pipe at $6.0{\displaystyle \frac{\text{m}}{\text{s}}}$‍ and flows out at $1.5{\displaystyle \frac{\text{m}}{\text{s}}}$‍.

Both ends are circular, and the entry has a $1.0\text{cm}$‍ radius.