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The design for a two-tank system is shown. The inner tank must be surrounded by oxygen with a density of 0.0827 pounds per cubic foot.

Diagram shows a small rectangular prism placed inside a large rectangular prism. Small prism has a length of 5 feet, a width of 4 feet, and a height of 3 feet. Large prism has a length of 20 feet, a width of 8 feet, and a height of 6 feet.
What amount of oxygen is needed in the outer tank?

To meet the density required, approximately
pounds of oxygen is required.