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еве го истиот проблем ...
http://forum.onlineconversion.com/showthread.php?t=285
болдирав за да забележите дека се работи за ист проблем .. празна вреќа со ширина и должина дадени ..
има и некои формули изведени .. ѕирнете ..
http://forum.onlineconversion.com/showthread.php?t=285
How can I determine the volume a bag will hold given its flat dimensions? Say a sandbag 20 x 36"? Is there a formula to estimate volumes of flat bags?
We know you need 3 dimensions to generate a volume. But flat bags are defined by 2 dimensions only. Nonetheless, they get filled all the time. If it was easy, I’d do it myself, but the math gets pretty complex. Let’s start by defining terms. Bags are usually given as Length (L) by Width (W), with the opening on the W side. That makes the circumference (C) of the opening 2W. The diameter of that opening, 2W/Pi, would be the maximum depth of our flat bag. We could use L x 2W/Pi, but both ends are flat. I suspect the formula would be something like (L/W x constant (K)) x 2W/Pi x L. We could, I suppose, fill up a bunch of various sizes of bags and see if a pattern emerges, but a mathematical formula seems much cleaner, don’t you think? Any thoughts? Anyone?
болдирав за да забележите дека се работи за ист проблем .. празна вреќа со ширина и должина дадени ..
има и некои формули изведени .. ѕирнете ..