Why are coins round and not square or cubes, etc.?
In: 265
A round shape gets wear on all sides, keeping a round shape even after circulation. Everything else degrades into a circle (or sphere, I guess) over time, as the corners stick out and get caught on stuff.
Holes in the middle used to be more common so they could be carried on strings, but that’s not been common for a while, hence the shape that holds across currencies by now
Latest Answers