How Far is Now Ravi From His starting point?

Ravi walks 8 km North-East and then 6km South-East. How far is he from his starting point?

  1. 14 km
  2. 7 km
  3. 9 km
  4. 10 km
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1 Answer(s)

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Answer: (4) 10 km
Explanation:-
In figure-

RE: How Far is Now Ravi From His starting point?


Ravi walks in North-East direction = 8 km
and he walks in South-East direction = 6 km

His distance from starting point = (82 + 62)1/2
= (64 + 36)1/2
= 1001/2 = 10 km.
Hence, he is 10 km far from the starting point.

 

Anurag Mishra Professor Answered on 4th June 2015.
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