Abdunazarov Rabimkul and Halimov Oktam Haydarovich 2021. Calculating The Volume Of Liquid In Cylinder Vessels Which Have Curved Borders Level 2 Geometric Surface. The American Journal of Applied Sciences. 3, 12 (Dec. 2021), 16–21. DOI:https://doi.org/10.37547/tajas/Volume03Issue12-03 .