Janak started from his office and after travelling a distance of 4 km towards north, he turned to the left and travelled a distance of 3 km. He then turned left and travelled 9 km. He then took a final left, travelled 3 km and stopped. What is the shortest distance betwee n the stopping point and his office? (All turns are 90-degree turns only)

One morning, Dev was standing facing a tree. The shadow of the tree fell exactly to his left. In which direction was Dev facing?

Dinesh starts from Point A and drives 14 km towards south. He turns left and drives 12 km, turns left again and drives 18 km. He then turns left and drives 16 km, and finally turns left, drives 4 km and stops at Point P. How far (shortest distance) and in which direction should he drive from Point P to reach Point A again?