ECZ 2015 · O-Level Paper 1 — Earth Geometry
An aeroplane leaves a town P(33°N, 32°E) and flies due south to a town Q(12°S, 32°E). Given that it flew for 4 hours to cover the distance PQ, find the average speed of the aeroplane in km/h. (Take π to be 227 and R = 6370 km)
- A. 1 251.25 km/h
- B. 5 005 km/h
- C. 583.58 km/h
- D. 2 502.50 km/h
Verified working — step 1
P and Q share a meridian and straddle the equator, so their latitudes ADD - find the arc, the distance, then the speed.The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
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