A man travels 10 km east, then 5 km north, and finally 5 km west. What is his distance from the starting point?
Q1. A man travels 10 km east, then 5 km north, and finally 5 km west. What is his distance from the starting point?
Answer: 5√2 km
Explanation: Net eastward distance is 10 - 5 = 5 km, and 5 km north. Use Pythagoras' theorem: √(5² + 5²) = 5√2 km.