Find the number of coins ,1.5 cm in diameter and thickness is 2 mm,,to be melted to fo a right circular cylinder of height 10 cm and diameter is 4.5
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Your answer is given below =》》》
As the coins are in the form of thin cylinder
Volume of each coin = π×(0.75)²×0.2 =0.1125π cm³
Volume of melted cylinder = π× (2.25)²× 10 = 50.625π cm³
number of coin required = (volume of melted cylinder)/(volume of each coin)
= 50.625π/0.1125π
= 450 coins is your answer
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