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There are several ways of looking at this matter.

First, the black hole itself has an indeterminate size; we cannot know what the diameter is.

Second, the size would depend on the mass of the black hole.

Third, the only "size" (as in physical size) that might seem to have any meaning would be the size of the Event Horizon, which is much larger than the black hole itself might be.

Finally, we're not sure whether the question has any real meaning. Even Stephen Hawking is reconsidering the concept of "black hole" and he now says that black holes, as previously understood, do not exist. So the matter is up in the air.

Ask this question next year, and we may have more information.

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11y ago

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