Mensurationhard · Past Paper
The volume of a right circular cone is 100π cm^3. If its height is 12 cm, find its slant height.
A13 cm
B5 cm
C12 cm
D15 cm
✓ Correct Answer: A — 13 cm
(1/3)πr^2(12) = 100π → 4r^2 = 100 → r = 5. Slant height l = √(12^2 + 5^2) = 13 cm.
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