(adsbygoogle = window.adsbygoogle || []).push({}); How big is a BLACK HOLE? Can it be "calculated"?

I was curious as to whether or not the size of a Black Hole can be calculated. If known, can the size of black holes vary, I mean, are there small ones, large ones, etc.?

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# How big is a BLACK HOLE? Can it be calculated ?

**Physics Forums | Science Articles, Homework Help, Discussion**