Ahmed walks 6 km east, then 8 km north. How far is he from his starting point, and in which direction?

  1. 10 km North-East
  2. 14 km North-East
  3. 10 km South-West
  4. 11 km North-East
Answer

A) 10 km North-East

Net east–west: 6 km, net north–south: 8 km. Distance = 6^2 + 8^2 = 10 km, towards the North-East.

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