Nah.
Yes, whenver using square-foot you should use a hyphen
You do not use a hyphen when writing square feet. Using a hyphen would make it one word which should not be the case.
Yes, you should use a hyphen in "district-wide" when it functions as a compound adjective before a noun, such as in "district-wide policies." However, if it comes after the noun, you typically do not use a hyphen, as in "the policies are district wide."
It should be hyphenated: non-weight bearing.
You should use a hyphen to represent years with more than two digits that end in a number other than zero, such as twenty-seven and one hundred and thirty-three. The hyphen is only used between the last two digits.
Yes it should be hyphenated: well-liked.
It should be hyphenated when it is being used as an adjective.
Yes, you should use a hyphen in "world-renowned." The hyphen connects the words "world" and "renowned" to indicate that they work together as a single adjective describing someone or something that is famous globally. This helps clarify the meaning and ensures proper readability.
Yes, unless you mean that the car salesman is a small person.
It should be hyphenated when it's an adjective.
No, a hyphen is not needed.
Yes, if "easy-to-use" is describing something else. An example would be "Answers.com is an easy-to-use tool for gathering knowledge."