Abidjan is 4o west of Accra and on the same circle of latitude. If the…

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Mathematics WAEC 1988

Abidjan is 4o west of Accra and on the same circle of latitude. If the radius of this circle of latitude is 6370km, how far is Abidjan west of Accra, correct to the nearest kilometer? [Take π = 22/7]

  • 222km
  • 445km checkmark
  • 890km
  • 5005km
  • 10010km

The correct answer is: B

Explanation

θ/360
* 2πr = Rcos4o


4/360
*
40041/1
= 445km
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