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13 mm
1 mm
The figure above depicts an agar cube with a side length of 13 mm. In an experiment, students
submerged the cube in red dye for 12 hours. The red dye permeated 1 mm on each side, as
indicated by the shading in the figure.
Volume of a rectangular solid: V = lwh
Calculate the volume of the agar cube that remained unpenetrated by the red dye.
mm³