7.48 US gallons of water.
That would be very difficult to determine. The experiment could never be set up and conducted, since there is no such thing as a "cubed square foot". If you meant to say cubic foot, then here is a way to determine it. You will need golf tees that will sink in water, plus a container holding 2 cubic feet, with a mark at the one cubic foot level. Fill the container with water to the one cubic foot level. Start dropping in the golf tees until the water level is at the top, or two cubic feet. Count how many golf tees you put into the container to get your answer.
1 cubic foot of air will support 62 lbs
Assuming the container is full at 1500 liters, the container's volume in cubic feet will be about 53 cubic feet (52.9720005, more precisely).
One cubic foot is a measure of volume. A one cubic meter container could hold up about 264 gallons of water.
Cubic foot
That depends on what substance you fill those cubic feet with. -- If you fill them with air, they can't hold even one pound. -- If you fill them with water, they can hold almost 219 pounds. -- If you fill them with concrete, gold, or stones, they can hold even more pounds.
A standard 20-foot sea container has a capacity of about 33 cubic meters or approximately 1,165 cubic feet. Assuming standard water bottles are 500 milliliters (0.5 liters), each bottle occupies about 0.0005 cubic meters. Therefore, a 20-foot container can hold roughly 66,000 bottles of water, depending on packaging and stacking efficiency.
The volume of a standard container van, such as a 20-foot or 40-foot shipping container, can be calculated by multiplying its internal dimensions. A 20-foot container typically has a volume of about 33 cubic meters (1,172 cubic feet), while a 40-foot container has a volume of approximately 67 cubic meters (2,372 cubic feet). These values can vary slightly based on specific container models and manufacturers.
a 300 liter or bigger tank
They measure different things. A foot is a linear measure, it measures distance or the length of something. A cubic foot (or any cubic measurement) measures the volume or capacity of a container. How much the 'stuff' the container can hold.
A square foot cannot hold water its 2 dimensional. What you see is what you get . A one cubic foot container can hold 7.48 US gallons of liquid.
One cubic foot of water is 7.4805 gallons.