Starting from his house, Ali walks 3 km north, then 4 km east to reach the market. What is the shortest distance between his house and the market?
- A. 4 km
- B. 5 km ✓
- C. 7 km
- D. 6 km
Correct answer
B. 5 km
Explanation
Using the Pythagorean theorem on the 3 km and 4 km legs: the straight-line distance is the square root of (3^2 + 4^2) = 5 km.