Two ships on the equator are on longitudes 45oW and 45oE respectively. How far are…

Mathematics WAEC 1994

Two ships on the equator are on longitudes 45oW and 45oE respectively. How far are they apart along the equator, correct to 2 significant figures? (Take the radius of earth = 6400km and π = 22/7)

  • 15,000km
  • 10,000km checkmark
  • 6,400km
  • 5,000km
  • 3,200km

The correct answer is: B

Explanation

D = θ/360 x 2πR
45 + 45/360o
x
44/7
x 6400

= 10057 ≅ 10000km
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