13. 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 12m/s. The journey is shown in the following picture.

 

 

1. Shortest distance between \(C\) and \(E\) is  m.

 

2. Shortest distance between \(F\) and \(B\) is  m.

 

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

 

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