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Refer to figure.
What is the distance from EDUZ (Zerbst) (52°N 12.15°E) to EDAZ (Schönhagen) (52.2°N 13.16°E)?

  • A

    39 NM

  • B

    78 NM

  • C

    15 NM

  • D

    45 NM

Refer to figure.
For this question, normally a plotter should be required to measure the distance from one point to another. But, the chart scale is not known and, even if it was known, since it is just an excerpt of an aeronautical chart, any scale distortion after printing cannot be guaranteed.

So, the following manner, as the safest one to measure the distance on a chart, is recommended:

  • Draw a straight line from the centre of the symbol of EDUZ (Zerbst) airport to the centre of the symbol of EDAZ (Schönhagen) airport.
  • Transfer the straight line along a meridian (prefer a "clear" meridian, as free of symbols as possible).
  • Along a meridian, it states that "1' or arc is equal to 1 NM" and "1° or arc is equal to 60 NM".
  • Thus, since the line along the meridian is 39', then the distance is 39 NM.

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