A solid cylinder of radius 4 cm and height 9 cm is melted and recast into cylinders of radius 2 cm and height 3 cm. Find the number of small cylinders formed.
Physics · Mathematical tools and vector · Geometry & Mensuration
NEET JEE Mains

Question

A solid cylinder of radius 4 cm and height 9 cm is melted and recast into cylinders of radius 2 cm and height 3 cm. Find the number of small cylinders formed.

G1 Physics · Accepted Answer

By volume conservation: N=(4²×9)/(2²×3)=144/12=12.