I know exactely what it all means .......not
and this is why I stick to simple things, in plain English, that I can understand.Seems like mostly definitions/assumptions question to me:
A. In reality all is approximated (have measurment error), including Euclidian space as approximation.
B. In common abstract assumptions (Euclidian space and real numbers - as opposed to rational numbers) circle with exact area should have irrational diameter. So you can't 'draw' such a circle.