If the rectangular box with no lid shown above is cut along the vertical edges and flattened, which of the following figures best represents the result?

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Choice E
Level of Difficulty E M H

This type of question is a brain imaging exercise. Notice that when the sides of the box are flattened, each edge of the bottom will be extended two units of length on each end, or four units of length altogether. The only picture that correctly portrays the result is the last, or choice E.

For more practice on 3D solids and similar problems, go to Skill Set 12: Geometry - 2D Figures and 3D Solids.

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