1.

A solid metallic cuboid of dimensions 18 cm × 36 cm × 72 cm is melted and recast into 8 cubes of the same volume. What is the ratio of the total surface area of the cuboid to the sum of the lateral surface areas of all 8 cubes?

A. 2 : 3
B. 7 : 12
C. 4 : 7
D. 7 : 8
Answer» E.


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