SOLUTION: a cube whose sides measure 8 units is painted outside. after painting, the cube is disassembled into 512 unit cubes. how many of the 512 cubes have no paint on its surface?

Algebra ->  Surface-area -> SOLUTION: a cube whose sides measure 8 units is painted outside. after painting, the cube is disassembled into 512 unit cubes. how many of the 512 cubes have no paint on its surface?      Log On


   



Question 331932: a cube whose sides measure 8 units is painted outside. after painting, the cube is disassembled into 512 unit cubes. how many of the 512 cubes have no paint on its surface?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
a cube whose sides measure 8 units is painted outside. after painting,
the cube is disassembled into 512 unit cubes.
how many of the 512 cubes have no paint on its surface?
:
Subtract 2 units from each side, so you have an inner cube of 6*6*6 = 216 cubes