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Question
A cube of 4 cm has been painted on its surfaces in such a way that two opposite surfaces have been painted blue and two adjacent surfaces have been painted red. Two remaining surfaces have been left unpainted. Now the cube is cut into smaller cubes of side 1 cm each.
How many cubes will have at least blue colour on its surfaces ?
A cube of 4 cm has been painted on its surfaces in such a way that two opposite surfaces have been painted blue and two adjacent surfaces have been painted red. Two remaining surfaces have been left unpainted. Now the cube is cut into smaller cubes of side 1 cm each.
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Solution
The correct option is D 32
As two opposite surface are blue then the number of cubes with blue colour in its surface are 16+16=32
As two opposite surface are blue then the number of cubes with blue colour in its surface are 16+16=32
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