SOLUTION: We glued together several unit cubes to make a solid (no hole in the middle) big cube. There are a total of 80 unit cubes that are either at the vertices or on the edges of the

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Question 808851: We glued together several unit cubes to make a solid (no hole in the
middle) big cube. There are a total of 80 unit cubes that are either at the
vertices or on the edges of the big cube. How many unit cubes did we use
to build the big cube?

Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!
If I say that is the number of cubes
along an edge including the corners, then
is the number not including
the corners.
Going around the cube I have
edges and corners, so





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The number of unit cubes should be

512 unit cubes

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