Two ships on the equator are on longitudes 45oW... - WAEC Mathematics 1994 Question
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)
A
15,000km
B
10,000km
C
6,400km
D
5,000km
correct option: b
D = θ/360 x 2πR
45 + 45/360o x
44/7 x 6400
= 10057 ≅ 10000km
= 10057 ≅ 10000km
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