The question is meaningless. Nine feet is a linear measure - a length. Square feet is a measure of area, not length.
The question is not meaningless. In the given sentence or in any other sentence the definite article is 'the'. There are three ARTICLES: a and an are Indefinite articles. The is the definite article.
There are nine square feet in every square yard.
nine.
If it is nine feet by nine feet, then it is 81 square feet.
nine square yards.
There are 40 square yards in 360 square feet. (just divide square feet by nine to get square yards).
There are nine square feet in a square yard.
One square yard equals nine square feet.
There are nine square feet in every square yard.
nine.
If it is nine feet by nine feet, then it is 81 square feet.
Nine square yards equals 81 square feet.
486 square feet @nine (9) square feet for every square yard.
One square yard equals nine square feet.
nine square yards.
There are 40 square yards in 360 square feet. (just divide square feet by nine to get square yards).
42 square feet = 4.7 (4.66666667) square yards.Divide square feet by nine (9) to get square yards
945 square feet of carpet. (just multiply square yards by nine to get square feet).