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Mathematics
A large cube is formed from the material obtained by melting three smaller cubes of 3, 4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube?
A
2 : 1
Option A
B
3 : 2
Option B
25 : 18
Correct answer
D
27 : 20
Option D
Correct answer: C
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