The edges of three iron cubes are 6cm; 8cm; 10cm respectively. A new cube was made by melting them. Find the edge of the new cube?
Choose the correct choice from the following choices
A) 17 B) 19 C) 16 D) 12 E) 14

Rationale: 63 + 83 + 103 = a 3 = > a = 12 answer : d
Answer: D