Maximizing Rectangular Prism Volume

Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to list the dimensions of a rectangular prism with the greatest volume.

Hint

What shaped rectangular prism has the most volume? How do we change the dimensions so they are as close to a cube as possible?

Answer

94, 85, and 76

Source: Robert Kaplinsky

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