A man starts walking from point A and walks 6 km east, then 4 km north, and finally 3 km west. How far is he from point A?
Show answer & explanation
Correct answer: C
Explanation
6 km east
4 km north
3 km west
Distance in a right-angled triangle = √(x² + y²)
East − West distance = 6 − 3 = 3 km
North distance = 4 km
Distance = √(3 × 3 + 4 × 4)
= √(9 + 16)
= √25
= 5 km