Find the number of coins 1.5 cm in diameter and 0.2 cm thick to be melted to form a right circular cylinder of height 8 cm and base radius 3 centimetre
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The total number of coins required is 450 coins
Step-by-step explanation:
Radius of a coin = 1.5/2 = 0.75 cm
Radius of cylinder =4.5/2 = 2.25 cm
No. of coins required= volume of cylinder/volume of coin
Volume of cylinder = 7 x 22 x 2.25 x 2.25 x 10 x 7
Volume of coin = 22 x 0.75 x 0.75 x 0.2 x 7
= 450 coins
Thus the total number of coins required is 450 coins
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