Same chapter4 marksDifficulty: Hard
A toy is in the shape of a cone of radius 3.5 cm and height 12 cm mounted on a hemisphere of the same radius. Find the total volume of the toy. Take π = 22/7.
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4 marksDifficulty: Hard
A solid cylinder of radius 6 cm and height 15 cm is melted and recast into spheres of radius 3 cm. How many spheres are formed?
Original Khojo Papers practice question — not from a past board paper.
Answer
15 spheres
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The cylinder has volume π × 36 × 15 = 540π cm3 and each sphere has volume (4/3)π × 27 = 36π cm3, so 540π ÷ 36π = 15 spheres.
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