A large cube is formed from the material obtained by melting three sm – McqOptions

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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.	2 : 1
B.	3 : 2
C.	25 : 18
D.	27 : 20
Answer» D. 27 : 20

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