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A ship after sailing 12 km towards south from a particular place covered 5 km more towards east. Then the straightway distance of the ship from that place is
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- 11 km
- 18 km
- 15 km
- 13 km
- 11 km
Correct Option: D
According to question , we draw a figure triangle ABC 
From right angle triangle , we have
∴ OB = √OA² + AB²
OB = √12² + 5²
OB = √144 + 25
OB = √169 = 13 km.
