A man walks 7 km north, then 4 km east, and finally 3 km south. What is his distance from the starting point?
Q1. A man walks 7 km north, then 4 km east, and finally 3 km south. What is his distance from the starting point?
Answer: 4√2 km
Explanation: Net northward distance is 7 - 3 = 4 km, and 4 km east. Use Pythagoras' theorem: √(4² + 4²) = 4√2 km.