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Question 1:
The edge of three cubes of metal is 3 dm, 4 dm and 5 dm. They are melted and formed into a single cube. Find the edge of the new cube?
A. 3 dm
B. 4 dm
C. 5 dm
D. 6 dm
Feedback 3^3 + 4^3 + 5^3 = a^3 => a = 6

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