Mensurationmedium · Past Paper
The area of the curved surface of a cone is 308 cm² and its radius is 7 cm. Find its slant height.
A7 cm
B10 cm
C14 cm
D21 cm
✓ Correct Answer: C — 14 cm
πrl = 308 => (22/7) * 7 * l = 308 => 22l = 308 => l = 14 cm.
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