ECZ 2016 · GCE Paper 1 — Similarity and Congruency
Two similar solids have surface areas in the ratio 4:25. If the volume of the bigger solid is 62.5 cm3, calculate the volume of the smaller solid.
- A. 12.5 cm3
- B. 4 cm3
- C. 25 cm3
- D. 10 cm3
Verified working — step 1
Route the ratio through LENGTHS: square-root the areas down to lengths, then cube up to volumes.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.
Have a different question?
Search it — if it is from a past paper or a school mock, chances are we have it worked out, or one that uses the same method.
Search any past-paper question