Ali walks 5km east, then 4 km north, How far is he from starting point?
- 5.4 kms
- 6.4 kms
- 7.4 kms
- 68.4 kms
Explanation
Ali’s displacement can be found using the Pythagorean theorem:
Distance = √(5² + 4²) = √(25 + 16) = √41 ≈ 6.4 km
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