ECZ 2020 · GCE Paper 1 — Mensuration
The diagram below shows a right square pyramid ABCDE of base 6cm and EF = 5cm. Calculate the total surface area of the triangular faces of the pyramid.
- A. 60 cm2
- B. 90 cm2
- C. 120 cm2
- D. 30 cm2
Verified working — step 1
Work face by face: each triangular face has base 6 cm (a base edge) and height 5 cm (the slant height EF), and a square pyramid has FOUR of them.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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