ECZ 2023 · GCE Paper 1 — Similarity and Congruency

Two cylindrical tins are geometrically similar. The radius of the base of the smaller tin is 6cm and that of the bigger tin is 9cm. Given that the volume of the bigger tin is 108cm3, find the volume of the smaller tin.

  • A. 32 cm3
  • B. 36 cm3
  • C. 48 cm3
  • D. 72 cm3

Verified working — step 1

Linear scale factor, smaller:bigger = 6:9

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Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.

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