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