Question

27 small cubes are glued together to make a big tube. The exterior of the big cube is painted yellow in colour. How many among each of the 27 small cubes would have been painted yellow on 1 only one of its faces?2 two of its faces?3 three of its faces? ​

Answer 1

Answer:

n=3v27=3

only 1 of its face=6(n-2)^2

= 6(3-2)^2 = 6. (i) Ans

only 2 of its face=12(n-2)

= 12(3-2)= 12. (2) Ans

only 3 of its face 8. (3) Ans