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In an evening when Suraj started walking...

In an evening when Suraj started walking from his house, his shadow was exactly towards his right. He walked 6 km. Then he turned to his left and moved 4 km. Again he turns to his right and walked 6 km. Then he turned to his right and moved 13 km. How far is he and in which direction from the starting point ?
एक शाम को सूरज जब अपने घर से चलने लगा तो उसकी परछाई ठीक उसके दाहिनी ओर थी। वह 6 किमी चला। फिर वह अपने बायीं ओर मुड़ा और 4 किमी चला। फिर से वह अपनी दाहिनी ओर मुड़ता है और 6 किमी चलता है। फिर वह अपनी दाहिनी ओर मुड़ा और 13 किमी चला। वह आरंभिक बिंदु से कितनी दूर है और किस दिशा में है?

A

15 km North-East (15 किमी उत्तर-पूर्व)

B

15 km North (15 किमी उत्तर)

C

15 km South East (15 किमी दक्षिण पूर्व)

D

16 km South(16 किमी दक्षिण)

Text Solution

Verified by Experts

The correct Answer is:
A


`AF = AB +CD`
`=6+612 km`
`FE =DE-8C`
`=13-4`
`=9`
`EA = sqrt(AF^(2)+EF^(2))`
`= sqrt(12^(2)+9^(2))`
`= sqrt(144+81)`
`= sqrt(225)`
`= 15 km`
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