A man walks 1 km towards the East, then 1 km towards the South, then 2 km towards the East, and finally 1 km towards the North. How far is he from his starting point?
Q1. A man walks 1 km towards the East, then 1 km towards the South, then 2 km towards the East, and finally 1 km towards the North. How far is he from his starting point?
Answer: √5 km
Explanation: He ends up 3 km East and 0 km North of his starting point after walking South and then North the same distance.