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The six faces of a three-inch wooden cube are each painted red. The cube is then cut into one-inch cubes along the lines shown in the diagram. How many of the one-inch cubes have red paint on at least two faces?

 Mar 30, 2020
 #1
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8  on top level will have paint  on at least two faces

 

4  on the  middle  level will have  paint on at least  two faces

 

8  on the  bottom level will have paint on at least two faces

 

 

So

 

8 + 4 + 8    =  20

 

 

 

cool cool cool

 Mar 30, 2020

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