A person walks 4 km north, then 3 km east. What is the shortest distance to return to the starting point?
Q1. A person walks 4 km north, then 3 km east. What is the shortest distance to return to the starting point?
Answer: 5 km
Explanation: Using Pythagoras' theorem, the shortest distance = √(4² + 3²) = √(16 + 9) = √25 = 5 km.