Mensurationmedium · Past Paper
The radii of the ends of a frustum of a cone are 14 cm and 7 cm, and its height is 6 cm. Find its volume.
A2156 cm³
B1078 cm³
C1540 cm³
D2000 cm³
✓ Correct Answer: A — 2156 cm³
Vol = 1/3 πh(R² + r² + Rr) = 1/3 * 22/7 * 6 * (196 + 49 + 98) = 22/7 * 2 * 343 = 22 * 2 * 49 = 2156 cm³.
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