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A big cube painted with yellow colour in all sides. if you
cut it into 1000 cubes with same dimension. than how many
cubes were without painted anyside. explain it?
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Answer / steve
Each face has (10*10) 100 cubes painted. However adjoining faces share 10 smaller cubes:
Face 1 has 100 unique cubes painted.
The two opposite faces adjoining face 1 have (100-10) unique cubes painted.
The two other adjoining faces have (100-10-9-9)or (8x9)unique painted cubes.
The face opposite face 1 has (8X8) unique cubes painted.
Total 100 + 2*90 + 2*72 + 64.
| Is This Answer Correct ? | 9 Yes | 24 No |
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