Mensurationhard · Past Paper
A cylinder of height 12 cm and radius 3 cm is melted to form a cone of radius 3 cm. What will be the height of the cone?
A12 cm
B24 cm
C36 cm
D4 cm
✓ Correct Answer: C — 36 cm
Volume of cylinder = Volume of cone → πr^2h_cyl = (1/3)πr^2h_cone → 12 = (1/3)h_cone → h_cone = 36 cm.
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