QUESTION : Metallic discs of radius 0.75 cm and thickness 0.2 cm are melted to obtain 508.68 cm³ of metal. Find the number of discs melted.
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75
Number of disc = x
Volume of one disc = pie × r ²× h
Volume of one disc = 22/7×0.75×0.75×02 =0.3535 cm³
=>0.3535 × x = 508.68
X=508.68/0.3535
X= approx 1439
Volume of one disc = pie × r ²× h
Volume of one disc = 22/7×0.75×0.75×02 =0.3535 cm³
=>0.3535 × x = 508.68
X=508.68/0.3535
X= approx 1439
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11
1453 is the correct answer
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