algebra
posted by De Angelis .
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.

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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