I was busy writing a long- ish answer to https://math.stackexchange.com/questions/1097163/when-we-have-a-circle-in-euclidian-in-h-what-is-the-center-and-radius-of-this-c
but the question is on hold, and now I cannot post my answer.
(I guess it is just the waiting to become live queue )
I would like to be able that even while an question is on hold, it is possible to post answers.
I can agree that the answer will be hidden or so but just not be able to post an answer at all is I think to crude
(my answer is just to long to put in a comment)