



 
Hi Mike. The formula is rather complicated, but it can be done. In fact, I did this up a couple of years ago: http://mathcentral.uregina.ca/QQ/database/QQ.09.06/andy1.html If you want to skip straight to the equation, Penny summarized it nicely here: http://mathcentral.uregina.ca/QQ/database/QQ.09.07/h/mario1.html You'll need to know the radius, length and fill level . Cheers,  


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