SOLUTION: Daniel rides his bicycle 21km west and then 18 km north. How far is he from his starting point?

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Question 933462: Daniel rides his bicycle 21km west and then 18 km north. How far is he from his starting point?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Use the Pythagorean theorem,
D%5E2=21%5E2%2B18%5E2
D%5E2=441%2B324
D%5E2=765
D=sqrt%28765%29
D=3sqrt%2885%29