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On a Lambert Conformal chart the distance between meridians 5° apart along latitude 37° North is 9 cm. The scale of the chart at that parallel approximates:
  • A
    1: 3 750 000
  • B
    1: 2 000 000
  • C
    1: 6 000 000
  • D
    1: 5 000 000

Distance between meridian 5 degrees apart at latitude 37˚N is:

Cos latitude x difference in longitude x 60 = cos 37 x 5 x 60 = 239 N

Distance in Km = 239 x 1.852 = 442.6 km

442.6 km is represented by 9 cm

1 cm = 49.18 km = 49180 m = 4 918 000 cm

Scale 1: 5 000 000

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