If roofing material is 52¢ per square foot, how much would it cost for 90 square?

And I don't mean 90 sq. ft. I mean 90 square.

Public Comments

1. a square is 100 square feet. Please tell me that you can do the math....
2. there is 100 sq. ft. in a square of shingles 90x100 = 9000 9000x.52= 4680.00 B.
3. 46.80
4. a square is 10'x10'. do the math.not being mean, just showing you the "a" in A x B=C.BTW, that's a HUGE roof!!!!