Same chapter1 markDifficulty: Medium
If the radius of a sphere is doubled, its volume becomes:
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3 marksDifficulty: Medium
A cone has radius 7 cm and height 24 cm. Find its slant height, its curved surface area and its volume. Take π = 22/7.
Original Khojo Papers practice question — not from a past board paper.
Answer
Slant height 25 cm, curved surface area 550 cm2 and volume 1232 cm3.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
l = √(72 + 242) = 25 cm. Curved surface area = πrl = 22/7 × 7 × 25 = 550 cm2. Volume = (1/3)πr2h = (1/3) × 22/7 × 49 × 24 = 1232 cm3.
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