6. A man goes 3 km north and then 4 km east. find how far away is he from his initial position? 7. A boy Cycles 10km South-east, then 8km West. how far away is he from his initial position? 8. The sides of a triangle are 29cm, 21cm and 20cm. show that it is a right-angled triangle.
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6)
Pythagoras theorem
3²+4² = distance²
9+16 = distance²
25 = distance²
√25 = distance
distance = 5km
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