math

Volume of Aluminum Foil. One cubic centimeter of
aluminum weighs 2.7 grams. If a piece of aluminum
foil weighs 5.4 grams, find the volume of the aluminum
foil.

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1. Use cross multiplication for direct proportion:
1 c.c. : 2.7 grams
x c.c. : 5.4 grams
x=5.4*1/2.7=2 cc

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posted by MathMate
2. A rectangular sheet
of aluminum foil is 50 centimeters long and
20 centimeters wide, and weighs 5.4 grams. Find
the thickness of the aluminum foil in centimeters

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posted by stacey

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