A man drives 7 km east, then 5 km south, then 3 km west. How far is he from the starting point?
Q1. A man drives 7 km east, then 5 km south, then 3 km west. How far is he from the starting point?
Answer: √(4² + 5²) km
Explanation: Net displacement east is 7 - 3 = 4 km, and south is 5 km, so use Pythagoras' theorem: √(4² + 5²).