A man travels 8 km north, then 4 km east, and finally 4 km south. What is his distance from the starting point?
Q1. A man travels 8 km north, then 4 km east, and finally 4 km south. What is his distance from the starting point?
Answer: 4√2 km
Explanation: Net northward distance is 8 - 4 = 4 km, and 4 km east. Use Pythagoras' theorem: √(4² + 4²) = 4√2 km.