A cube is painted red on all faces.
A cube is painted red on all faces. It is then cut into 27 equal smaller cubes. How many cubes are painted on only 2 faces?
Answer/Solution
12
Steps/Work
The mini-cubes with 2 painted sides are ALL on the edge of the cube, in the "middle" of the edge.
There are 4 in front, 4 in back and 4 more on the "strip" that runs around the left/top/right/bottom of the cube.
4 + 4 + 4 = 12.
Answer A
There are 4 in front, 4 in back and 4 more on the "strip" that runs around the left/top/right/bottom of the cube.
4 + 4 + 4 = 12.
Answer A