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:
curved surface area of the cylinder. [Take π = 3.1]
Topic: Mensuration of solids
Previous-year question practice database
Answer
Exam answer
r=3 cm, h=32 cm, π=3.1.
Curved surface area = 2πrh = 2×3.1×3×32 = 595.2 cm².
Answer: 595.2 cm².
Explanation
Use the cylinder curved-surface-area formula with the radius found in part (i).
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