stephen buys a new moped . he travels 4km south and then 8km east . how far does he need to go to get back where he started?
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Answer:
He has to travel 10km to reach starting point.
Explanation:
The path will make a right angle triangle with base (8km) and height (4km).
By Pythagoras Theorem
Distance from Starting Point = {sqrt}(8^2)+(4^2)
= {sqrt}(64+16)
= {sqrt}100
= 10km
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