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1. |
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. | 10 : 12 |
B. | 15 : 14 |
C. | 20 : 16 |
D. | 25 : 18 |
Answer» E. | |