WAEC Mathematics 1988 Question 37

Question 37

Latitude and Longitude

Abidjan is 4° 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)

A.222km
B.445km
C.390km
D.5005km
E.10010km.

Show the answer and explanation

Answer: B (445km)

Explanation

Distance = 4/360 × 2 × 22/7 × 6370 = 444.9 ≈ 445 km (the radius given is already the radius of the latitude circle).