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
- 6,400km
- 5,000km
- 3,200km
The correct answer is: B
Explanation
D = θ/360 x 2πR45 + 45360o
x 447
x 6400= 10057 ≅ 10000km