Question

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

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

hope it helps:)

p.s.

refer to jpeg for better answer

Answer 2

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