Ashok started walking towards the East. After walking 30 metres, he turned left and walked 50 metres. Then he turned left and walked 60 metres. Finally, he turned to his left again and walked another 10 metres before coming to a halt. What will be the shortest distance between his starting point and his final point?
From the above diagram, we can see that the shortest distance between the initial point (i) and the final point (f) is
√(30^2+40^2)=50m