NumericalModerate2 marks
3(c)
A solid metallic sphere of radius 6 cm is melted and made into a solid cylinder of height 32 cm. Find the:
radius of the cylinder.
Topic: Mensuration of solids
Previous-year question practice database
Answer
Exam answer
Sphere volume = cylinder volume.
(4/3)π(6³) = πr²(32)
288π = 32πr² r² = 9 r = 3 cm.
Answer: 3 cm.
Explanation
The sphere is completely melted and recast, so volumes are equal.
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