To convert cubic meters to square centimeters, you need to multiply by 10000, as there are 100 centimeters in a meter. Therefore, 1 cubic meter is equal to 1,000,000 square centimeters (1m³ x 10000 = 1,000,000 cm²).
Infinite, in theory. cm2 is a measurement of area, m3 is volume.
If you had a 1m3 block, then the top face would be 1m x 1m, having
10000cm2, if you then sliced this layer off you would have another
10000cm2 below it, and so on. It depends how thinly you slice the
block.