TV Tropes calls it the Square-Cube Law, and cites Galileo in the real life examples section:

https://tvtropes.org/pmwiki/pmwiki.php/Main/SquareCubeLaw

It's the reason why giant robots probably couldn't be as agile or powerful as in something like Transformers or Gundam, and why kaiju like King Kong or Godzilla couldn't exist in the real world.