Formula for volume of a cylinder. Cylinder_volume p R² - r² cylinder_height. Now it might seem like a difficult thing to find but really all you need to know as with most math is a simple equation.
Visual in the figure below.
Cylinder_volume p R² - r² cylinder_height. The formula is V pr 2 h where V is the Volume r is the radius of the circular base h is the height and p is the constant pi. The volume of the cylinder is the area of the base height. The base happens to be a circle so you must use the Area of a Circle formula to calculate the area of the base.