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 painted yellow on (i) only one of it's faces? (ii) two of it's faces? (iii) three of it's faces?

1
by kakkar6644

• qais
• Content Quality
2015-12-13T12:17:37+05:30

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
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
OK sometimes answers can be wrong
yea :)
one more way...only one cube is not painted...so total will be (27- (1+6+8)) = 12
yep right qais
thanq