A girl walks 4 km towards the west, then turns right and walks 3 km. What is the straight-line distance between her initial and final positions?
Q1. A girl walks 4 km towards the west, then turns right and walks 3 km. What is the straight-line distance between her initial and final positions?
Answer: 5 km
Explanation: Using Pythagoras' theorem: √(4² + 3²) = √(16 + 9) = √25 = 5 km.