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Coins were made by melting a solid cuboidal block of metal with dimensions 16x11x10 in cm. How many coins of thickness 2 mm and diameter 2 cm can be made???
The answer is 2800.
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1 solution
no. of coins = volume of cuboidal block/volume of one coin =16x11x10/22/7x1x1x0.2 =2800