The question cannot be answered sensibly.
A cube cannot be cm2. cm2, if that is what was intended, is a measure of area, not of volume.
64
Eight 4 inch cubes are needed to build and 8 inch cube.
Zero would be enough.
12
2 layers would fit in the prism and each layer would have 15 cubes. Total: 30 cubes.
64
This is not well-worded. The smaller the cubes the more you'd need to fill a container, and the more completely they'd fill it. One large cube would not fill a round container but there might not be room for more than one.
a hundred million squared
There is no name for it. If you were looking for the answer "capacity" the question is very poorly worded.
1 million centimetres = 10,000 meters = 32808.399 feet
If you mean that the cubes have a side length of 1 cm, and you place them side by side, you would get a length of exactly a million cm.
funnel
white, for it absorbs the least amount of light.
funnel
Eight 4 inch cubes are needed to build and 8 inch cube.
9
24 cubes would be it.