Posted by De Angelis on Sunday, February 27, 2011 at 8:07pm.
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.

algebra  eb, Tuesday, April 12, 2011 at 1:30am
D = kg/V = 2700kg/m^3.
5.4*10^3 / V = 2700,
V = 5.4*10^3 / 2.7*10^3 = 2*10^6.
V = 0.05 * 0.02 * T = 2*10^6,
1*10^3*T = 2*10^6,
T = 2*10^6 / 1*10^3 = 2*10^3m = 2mm.
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