A solid weighs 6.4 kg in air and 5.6 in water. Find the density of the solid

Answer 1

Archimedes said Force up = weight of fluid displaced.
It displaced 6.4-5.6 = 0.8 kg of water
so its volume is
V = .8 kg (m^3/1000kg) = 8*10^-4 m^3

so its density is (6.4 /8)10^4 kg/m^3
=8000 kg/m^3

might be iron