The answer depends on what part you want the volume for.
6 faces
I am not 100% sure but I think the most polygons in it is a hexagon since its a hexagonal prsim....
in pokemon black and white if you trade feebas holding a prism scale it evolves into milotic.
Colors in a rainbow are separated based on their different wavelengths. Each color has a unique wavelength, with red having the longest wavelength and violet the shortest. When sunlight passes through water droplets in the atmosphere, the different wavelengths are refracted at slightly different angles, creating the spectrum of colors we see in a rainbow.