ECZ 2017 · O-Level Paper 1 — Earth Geometry
Town L is on (0°, 30°W) and town K is on (0°, 60°E). What is the distance between L and K, in kilometres? [R = 6370 km, π = 227]
- A. 5 005 km
- B. 20 020 km
- C. 6 370 km
- D. 10 010 km
Verified working — step 1
L and K are both on the equator, 90° apart in longitude. Distance = (90360) × 2 × (227) × 6370 = ¼ × 40 040 = …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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