Mensurationhard · Past Paper
A cylinder of height 10 cm and radius 6 cm is melted to form a cone of height 10 cm. What is the radius of the cone?
A6√3 cm
B6 cm
C18 cm
D12 cm
✓ Correct Answer: A — 6√3 cm
π(6)^2(10) = (1/3)π(R^2)(10) → 36 = R^2 / 3 → R^2 = 108 → R = ∛108 = 6√3.
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