ECZ 2017 · GCE Paper 1 — Similarity and Congruency
Two tins are geometrically similar. If the ratio of their volumes is 27 : 64, find the ratio of their curved surface areas.
- A. 3 : 4
- B. 27 : 64
- C. 9 : 16
- D. 81 : 256
Verified working — step 1
Route every similar-solids ratio through LENGTHS: cube-root the volumes down to lengths, then square up to areas.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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