Q.

 

If a cuboidal metal of dimensions 44cms x 30 cms x 15 cms  was melted and cast into a cylinder of height 28 cm, then its radius is

 

 

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a

12 cm 

b

14 cm 

c

10 cm 

d

15 cm 

answer is D.

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Detailed Solution

Volume of cuboid

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Height of cylinder

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On melting

Volume of cuboid

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Volume of cylinder

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