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If the volumes of two cubes are in the ratio 8 : 1, the ratio of their edges, is?

8 : 1
2√2 : 1
2 : 1
None of these

Correct Answer: 8 : 1

Explanation:

Volume of new cube = [(5)³ + (4)³ + (3)³] cm³
= 216 cm³
Edge of this cube = ( 6 x 6 x 6)^1/3 = 6 cm

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