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Solution for How mañy bullets can be made out of a cube of lead, whose edge measures 22 cm, each bullet being 2 cm in diameter? - CBSE Class 9 - Mathematics

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Question

How mañy bullets can be made out of a cube of lead, whose edge measures 22 cm, each bullet being 2 cm in diameter?

Solution

Cube edge= 22cm 

∴ Volume of cube=`(22)^3`

=`10648cm^3`

And,
Volume of each bullet =`4/3πr^3`

=`4/3×22/7×(2/2)^3`

=`4/3×22/7`

=`88/21cm^3`

∴No. of bullets=`"Volume of cube"/"Volume of bullet"`

=`10648/(88/21)=2541`

 

 

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