This would be good to know if you had a lot of sono-tubes or a large cylinder to fill. Calculate and the answer is 008 cubic yards for one concrete tube. The length width and height are measured in feet.
For concrete the formula for volume is as follows.
The formula for cubic yards is this. If hand mixing its inadvisable to exceed a water to cement ratio of 055 which translates to 55 pounds of water for every 100 pounds of cement. 4000 psi concrete mixing ratio. Generally you should purchase 5 percent more concrete than you need to complete your concrete project to ensure that you have enough to amend mistakes.