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Q: A cube of 3x3x3 is painted from all the 6 faces If you cut the cube in 27 equal cubes of 1x1x1 then how many cubes will be painted from exactly 2 faces?

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The entire outer layer is painted so an 8x8x8 block inside isn't painted. Zero. All cubes are painted on at least one side and the 10x10x10 cube is painted on all sides. It's a 10x10x10 cube meaning there are 1000 cubelets. Ones on the inside too. So 8x8x8 = 512.

27 cubes 3x3x3

How many smaller cubes are not painted at all if a cube is painted green on all sides & cut into 64 cubes of equal size?

8

1

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All I can think of are the 2x2x2, 3x3x3, 4x4x4, 5x5x5, 6x6x6, 7x7x7, there might be a 8x8x8, Pyraminx, Megaminx, Octahedron, Teraminx, and the 1x1x1 :)

Assuming that the cubes are 1x1x1, there will be one thousand cubes in the larger cube.

The entire outer layer is painted so an 8x8x8 block inside isn't painted. Zero. All cubes are painted on at least one side and the 10x10x10 cube is painted on all sides. It's a 10x10x10 cube meaning there are 1000 cubelets. Ones on the inside too. So 8x8x8 = 512.

3x3x3 cube has 27 cubes. One is in the middle and cannot be seen so the answer is 26.

cubes without paint: 83 = 512. cubes with paint: 103 - 83 = 1,000 - 512 = 488. there's another explanation on this site

27

25

dayan2dayan5type c

27 cubes 3x3x3

0 sides are not painted! So all the cubes have three faces painted!

How many smaller cubes are not painted at all if a cube is painted green on all sides & cut into 64 cubes of equal size?

There are no cubes in a yard. There are 3x3x3=27 cubic feet in a cubic yard.

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