Two Structures Adrift In Space

There are 2 planet sized structures that are artificially made with no means of propulsion. Each structure has the approximate mass of Earth but are hollow inside. The inside area is where the people live.

The 2 structures are adrift in interstellar space. There are no significant celestial bodies for more than 1 light year away.

The skin of the structure is made of fused rock (the consistency of cooled lava). The skin is about 200 miles thick to partially offset any outside cosmic radiation.

The inside of the structures are hollow. Think of the inside of a skyscraper. Each of the floors is 5km below the one above with the top floor being about 5km below the "ceiling". The people live on each of the floors.

Based on other answers in WB I've seen, I assume that a size of 5X to 7X the diameter of the Earth would work if the insides of the structure were not very dense. So a ballpark of 60km diameter for the structures would yield about 10 - 12 floors.

In these structures, would it be safe to assume that the people experience reasonably close to 1 Earth gravity?

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Two Structures Adrift In Space

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