ECZ 2020 · O-Level Paper 2 · Question 6 — Mensuration

The figure below is a frustum of a cone. The base radius and top radius are 10 cm and 5 cm respectively, while the height is 12 cm. (Take π as 3.142)

(a) Calculate its volume.[6]

Verified working — step 1

Frustum of a cone: V = (13) π h (R² + Rr + r²).

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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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