Answer 1

return doesn't print anything, it just returns a value from a subroutine, like function or method. This is about the same in every language.

Please try to use the search function here, because this has been asked oftentimes before!

https://www.sololearn.com/discuss/2086620/?ref=app
https://www.sololearn.com/discuss/31667/?ref=app
https://www.sololearn.com/discuss/61131/?ref=app
https://www.sololearn.com/discuss/1383945/?ref=app
https://www.sololearn.com/discuss/12431/?ref=app

Answer 2

return is also not a method. It is a statement. Sqr() is a method or function, in your example.