6. Find the distance and time taken

A postman started from the post office at the point $P$ and gone to different places through $A$, $B$, $C$, $D$, $E$, $F$ and again reached $P$ with a speed of 6m/s. The journey is shown in the following picture.

 

 

1. Shortest distance between $E$ and $P$ is  m.

 

2. Shortest distance between $P$ and $C$ is  m.

 

3. The total distance travelled by the postman is  m.

 

4. Time taken to return the post office is  seconds.