Question: 62 small identical cubes are used to form a large cube . how many more cubes are needed to add one top layer of small cube all over the surface of the large cube ?
A) 64
B) 128
C) 152
D) 154
E) 256
Correct answer: d
Grade: 6 | Topic: Geometry | Difficulty: Hard | Standard: 6.G.A.2