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Question

How many bullets each of 5cm in diameter can be cast from a rectangular block of metal 11dm *1m*5dm?


Solution

Volume of block = 11 dm x 1 m x 5 dm = 110 cm x 100 cm x 50 cm = 550000 cu cm Volume of bullet = (4/3) x p x r3 = (4/3) x 3.14 x (2.5)3 = 65.4 cm3 (approx). Number of bullets = 550000/65.4 = 8410 (nearly)

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