1. A metallic sphere of radius 4.2 cm is melted and recast into the sh

1.	1. A metallic sphere of radius 4.2 cm is melted and recast into the shape of a cylinder ofradius 6 cm. Find the height of the cylinder.
Answer» If a solid is recasted in any other solid the volume remains the same. so,vol.of sphere=vol. of cylinder 4/3πr cube= 2πr square ×h 4/3×22/7×42/10×42/10×42/10 = 2×22/7×6×6×h h= 98.784/36 H=2.744

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

Answer»

If a solid is recasted in any other solid the volume remains the same.

so,vol.of sphere=vol. of cylinder

4/3πr cube= 2πr square ×h

4/3×22/7×42/10×42/10×42/10 = 2×22/7×6×6×h

h= 98.784/36

H=2.744