Rohan walks 2 km south, then 3 km west. What is the shortest distance to return to the starting point?
Q1. Rohan walks 2 km south, then 3 km west. What is the shortest distance to return to the starting point?
Answer: 3.6 km
Explanation: Using Pythagoras' theorem, the shortest distance = √(2² + 3²) = √(4 + 9) = √13 = 3.6 km.