A stack of 500 sheets of paper measuring 28cm times 21cm is 44.5mm high and has a mass of 2090g what is the density of the paper per cubic centimeter?

Answer 1

The question is implying, and we have to assume, that the 500 sheets are packed together

without any air or space of any kind between the individual sheets; the package is equivalent

to a solid brick of paper material that's 44.5 mm high.

44.5 mm = 4.45 cm

Volume of the brick = (28 x 21 x 4.45) = 2,616.6 cm3

Density = (mass) / (volume) = (2,090) / (2,616.6) = 0.7987 gm/cm3 (rounded)