The large cube is made up of 27 small cubes. All faces of this large
cube are painted red. Find the ratio of the number of small cubes
having one red face, two red faces and three red faces.
(ps. The answer is 3:6:4)
要求:
1.Full explanation(充分的解釋)
2.Follo my answer to calculate
數學題目!急交功課
2009-06-04 3:33 am
回答 (1)
2009-06-04 3:48 am
✔ 最佳答案
The number of :3 red face : 8 ( There are eight corners)
1 red face : 6 ( the center of six faces)
2 red face : 26 - 8 - 6 (26 instead 27 since the center small cube of the large cube have no red face) = 12
So 1 red face : 2 red face : 3 red face = 6 : 12 : 8 = 3 : 6 : 4
收錄日期: 2021-04-21 22:03:14
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