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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 one face?

 

 Jan 28, 2022
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Since the entire cube would be painted red, the only cube that will not have at least one side painted red will be the center piece. There is 27 1-inch cubes, and only 1 would not have red, so the answer is \(\color{red} 26\)

 Jan 28, 2022

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