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Question:

Hard conversion problem?

The aluminum in a package contains 75 ft2 of kitchen foil weighs approximately 12 ozAluminum has a density of 2.70 g/cm3What is the approximate thickness of aluminum foils in millimeters? (1 oz 28.4 g)10 pts best answer.Also just a note, I am very confused so tons of detail in the problem goes a long way, thanks!

Answer:

mass of aluminum m 12 oz x 28.4 g/oz 340.8 g volume of aluminum V m/D 340.8 g /(2.70 g/cm3) 126.2222 cm3 1 ft 30.48 cm 1 ft2 30.48 cm/ft x 30.48 cm/ft 929.0304 cm2 area of aluminum 75 ft2 x (929.0304 cm2 /ft2) 69677.28 cm2 area of aluminum A (l x w) volume of aluminum V ( l x w) x h A x h thickness of aluminum h V /A 126.2222 cm3 / 69677.28 cm2 0.00181 cm
someone messed with your stuff.

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