Weegy: Convert the units to metric:
length = 2.4 feet
length = 2.4 * 12 * 2.54
length = 73.152 cm
breadth = 1.0 feet
breadth = 1.0 * 12 * 2.54
breadth = 30.48 cm
Now calculate the volume of the sheet:
volume = length * breadth * height
volume [ = 73.152 * 30.48 * h
volume = 2230 h
And since:
density = mass / volume
19.32 = 0.2 / 2230h
2230h * 19.32 = 0.2
43077h = 0.2
h = 0.000004643 cm
Converting to nanometres and to two significant figures:
h = 46 nm ] (More)