First measure the diameter of the base usually easier than measuring the radius then measure the height of the cylinder. Volume of a Cylinder pr²h The Lateral Surface Area of a Cylinder 2prh. R is the radius of the cylinder.
As a formula volume where.
To calculate the volume of a cylinder you need to know its height and the area of its base. Volume pr 2 h where r is radius and h is height of the tank. This is half its diameter. Soenter r and h in the calculator to get the volume.