find the number of coins, 1.5cm in diameter and 2mm thick , to be melted to form a right circular cylinder of radius 2.25 cm and height 10 cm.
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volume of right circular cylinder=no of coins × volume of each coin
n×22÷7×15÷20×15÷20×2÷10=22÷7×225÷100×225÷100×10
n=450
n×22÷7×15÷20×15÷20×2÷10=22÷7×225÷100×225÷100×10
n=450
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