You can
put this solution on YOUR website!The container is a cylindrical solid.
Don't know why you call it over-sized but that might not make a difference.
It's diameter is 2 meters.
It's height is 3 meters.
It's radius is 1 meter which is one half the diameter.
The area of its base is presumed to be a circle which would be equal to

.
Substitute 1 for r to get Area of the Base =

.
Since

= 3.141592654, then the Area of the Base = 3.141592654 square meters.
The volume of the container would be equal to the Area of the Base Times the Height, which would then be equal to:
3.141592654 * 3 = 9.424777961 cubic meters.
The formula for the volume of the container is

.
Since

is the formula for the area of the base, then the formula for the volume of the container becomes:
Area of the Base * Height.