A girl cycles 18 km north, then 10 km west, and finally 6 km south. What is her distance from the starting point?
Q1. A girl cycles 18 km north, then 10 km west, and finally 6 km south. What is her distance from the starting point?
Answer: √(10² + 12²) km
Explanation: The girl is (18 - 6) = 12 km north and 10 km west, so distance = √(10² + 12²).