Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 4 - No. 30)
If a boat travels 3km North and then 4km East, what is the direct distance from the starting point?
5 km
7 km
1 km
4.5 km
Explanation
Use Pythagorean theorem: √(3² + 4²) = 5
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