what volume(in cm3) of lead (density=11.3 g/cm3 ) has the same mass as 100 cm2 of red wood (density = 0.38 g/cm3)?

Answer 1

mass = density * volume
11.3 * V = 0.38 * 100 cm^3
V = 38 / 11.3

(not 100 cm^2, that would be area)