Question

Find the avg. thickness of the sheet in centimeter:
11g piece of gold (Density: 19.32g/cm3) hammered into sheets whose are is 40ft^2

Answer 1

You have to convert 40 ft2 to cm2
1 ft = 30.48 cm
1 ft2 = 929.0304 cm2

11g / (929.0304cm2 * thickness cm) = 19 g / 1 cm3
Thickness is 6.231 x 10 ^ -4

Answer 2

Thanks, I got it. Never realized it that way.