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

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1.	A larger cube is formed from the material obtained by melting three smaller cubes of 3, 4 and 5 cm side. The ratio of the total surface areas of the smaller cubes and the larger cube is :
A.	: 1
B.	: 2
C.	5 : 18
D.	7 : 20
Answer» D. 7 : 20

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