A person walks 3 km North, then 4 km East, and 3 km West. How far is he from the starting point?
- 4 km
- 2.12 km
- 1.6 km
- 3.16km
Explanation
A person walks:
- 3 km North
- 4 km East
- 3 km West
Net East-West movement = 4 km East - 3 km West = 1 km East
North movement = 3 km
Distance from the starting point = √(3² + 1²) = √(9 + 1) = √10 ≈ 3.16 km
So, the person is approximately 3.16 km away from the starting point.
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