Question
How many spherical bullets can be made out of a lead cylinder 28 cm high and with base radius 6 cm , each bullert being 1.5 cm in diameter ?
Answer: Option D
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Volume of cylinder = `(pi xx 6 xx 6 xx 28 ) cm^3 = (36 xx 28) pi cm^3`
Volume of each bullet = `(4/3 pi xx 3/4 xx 3/4 xx 3/4) cm^3 = (9pi)/(16) cm^3`
Number of bullets = (Volume of cylinder)/(Volume of each bullet) =` [36 xx 28) pi xx (16)/(9pi)]` = 1792.
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