A cyclist goes 7 km north, then 24 km east. What is the shortest distance back to the starting point?
Q1. A cyclist goes 7 km north, then 24 km east. What is the shortest distance back to the starting point?
Answer: 25 km
Explanation: Using Pythagoras' theorem: √(7² + 24²) = √(49 + 576) = √625 = 25 km.