How many silver coins, 1.75 cm in diameter and of thickness 2 mm, must be melted to form a cuboid of dimensions?
Coins are cylindrical in shape.
Height (h1) of cylindrical coins = 2 mm = 0.2 cm
Radius (r) of circular end of coins =
Let n coins be melted to form the required cuboids.
Volume of n coins = Volume of cuboids
Therefore, the number of coins melted to form such a cuboid is 400.