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?
Answers:
A) 8
B) 2
C) 4
D) 6
E) 5
33 + 43 + 53   = a3   =&gt; a = 6   Answer: 6
<result>D</result>
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?