I need someone good at astronomy

I’m not a very scientifically or mathematically advanced person, so try not to bash me for this question, but I needed to know the answer for a certain debate I’m having.

If a planet or 1 km in diameter had 10 times the gravity of Earth, what would be its mass and/or density?

P.S. Please label what said object’s mass or density would be similar to, if anything.


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