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A box measures 4 units by 2.5 units what is the greatest number of cubes with a side length of .5 units that can be packed inside the box

User Terryl
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One layer of cubes that is 5 cubes (2.5 units) wide and 8 cubes (4 units) long can be put within the given dimensions. That is 40 cubes.

We don't have enough information to tell how many layers of cubes may fit into the box (if any).
User Rami GB
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