How many circular coins each of radius 3.5cm and 1.5mm thickness show be melted to form a cube of edge 5cm? Write the answer the nearest whole number?
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125 = πr^2 h
125 = 57.75 ×X. ( X is the no: of coins.)
X = 125÷ 57.75
X = 2.1645 coins
nearest whole number = 2 coins
125 = 57.75 ×X. ( X is the no: of coins.)
X = 125÷ 57.75
X = 2.1645 coins
nearest whole number = 2 coins
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