You do not use a hyphen when writing square feet. Using a hyphen would make it one word which should not be the case.
No, a hyphen is not required.
No, a hyphen is not needed.
The correct spelling of hyphen is nephyh
Yes, whenver using square-foot you should use a hyphen
No there shouldn't be a hyphen. Fingernails and toenails are full words.
No.
Tumblr URLs can't start or end with a hyphen.
No, faux pas doesn't require a hyphen.
No.
No.
Yes