A person walks 13 km north, then 9 km east, and finally 5 km south. What is his distance from the starting point?
Q1. A person walks 13 km north, then 9 km east, and finally 5 km south. What is his distance from the starting point?
Answer: √(8² + 9²) km
Explanation: The person is (13 - 5) = 8 km north and 9 km east, so distance = √(8² + 9²).