Q1 of 32 Page 267

A metallic sphere of radius 4.2 cm. is melted and recast into the shape of a cylinder of radius 6 cm. Find the height of the cylinder.


Given that, radius of sphere(r) is 4.2 cm and radius of cylinder(R) is 6 cm.


Let the height of cylinder be h.


∵ the sphere is melted and recast into cylinder


⇒ vol. of sphere = vol. of cylinder





⇒ h = 2.74 cm


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