A package of aluminium foil contains 100ft^ of product and weighs approximately 1lbThe density of aluminum is 2.70g/cm(cubed)Find the approximate thickness of the foil in millimeters.
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I never used the Imperial System, but I'm going to assume you meant 100 square feet100 square feet would be 9,29 m^2 (or 9.290304 square meters)The foil weighs 1 lb, which converts to 0,454 Kg (or 0,45359237 Kg to be precise)So our Metric System units for this foil are a surface of 9,29 m^2 and 0,454 kgWe know the density as well, 2,70g/cm^3 Let's make things easy for ourselves and convert all these into the same range - 9,29 m^2 would be 92900 cm^2, and 0,454 kg is 454 gramThe formula for density would be Mass/VolumeDensity The formula for volume would be Volume HeightWidthDepthWe can fill this inMass/volumedensity - 454g/ Volume 2,70g/cm^3 454g/ 2,70g/cm^3 Volume 168 ml (or 168,148148 milliliter) Volume ? cm 92900 cm^2 168 ml ? cm 92900 cm^2168ml /92900 cm^2 0,00180839612 cm 0,018 mm thickAs this is very very thin, I wouldn't put it past myself that I've made a decimal-point error somewhere in the calculationBut I hope you understand what I did :-)
