On 17/02/2021 15:38, The Natural Philosopher wrote:
On 17/02/2021 14:22, NY wrote:
And, even more important, a cubic centimetre weighs a gramme or a
cubic decimetre (a litre) weighs a kilogramme or a cubic metre weighs
a tonne.
Only of water. a cubic meter of gravel weighs 3 and a bit tonnes



No it doesn't. About 1.6 tonnes.