Question

Twenty-seven small cubes are glued together to make a big cube. 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

(i) only one of its faces?
(ii) two of its faces?
(iii) three of its faces?​

Answer 1

Explaination:-

• total number of small cube = 27

it means...for making one big cube..9 small cubes is used for making one face

then, 3×3×3 =27

now, A/q,

1. each face have only one cube painted one side

  total number =6 cube

2. each face have 4 cube painted 2 sides and shared by two faces

total number = (6×4)/2 =12 cubes

3.each corner have 3 sides painted

total number = 8

Answer 2

Answer:

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