Answer
$1.81 \times 10^{-2} mm$
Work Step by Step
$First, convert the weight of the foil to grams
8.0oz\times\frac{453.6g}{16oz}=227.0g$
$Next, determine the volume of aluminum foil
227.0g\div2.70 g/cm^3 = 84.0 cm^3$
$Convert area into cm^2
(50ft^2)(12in^2)(2.53cm) = 4.65 x 10^4cm^2$
$Because volume = area x thickness, thickness = volume/area
84.0\div(4.65 x 10^4cm^2) = 1.81 \times 10^{-2} mm$
