How much space does 1 cc of Juvederm take up? It looks like far more than 1cc and I measured it to be 1 cm x 5 cm x 1 cm (photo)

Look at the comparison between a juvederm syringe and an empty 3 cc syringe (slightly wider, but not by that much). Why is 1 cc of juvederm 5 cm long and 1 cm wide (I measured)? That's 5 cc of "space" taken up by the gel, right? I have very precise reconstructive needs after a number of bad procedures and surgeries, and I need to know exactly what "1 cc" or "1 syringe" of this filler provides in terms of volumizing. Ultra plus is the same "size" and I don't understand it.