"michael adams" wrote in message
...

1200 X 250 = 3000,000g = 3000 kg = 3 metric tonnes.

[which seems awfully heavy for what is after all, just over
a 6ft cube of chipped bark ]


But then 1 cubic metre of water weighs 1 tone so a 6ft cube of water would
weight about 5.8 tonnes.

--
Martin & Anna Sykes
( Remove x's when replying )
http://www.users.globalnet.co.uk/~sykesm