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Nautical mile is a unit of distance used in

  • A.Navigation
  • B.Road mile
  • C.Astronomy
  • D.Measuring the boundaries of a nation

Answer: A

The nautical mile is used in navigation at sea and in the air. It equals 1,852 m, defined as one minute of arc of latitude along a meridian.

That definition is what makes it useful: a degree of latitude is 60 nautical miles, so distance can be read straight off a chart's latitude scale.

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