square feet and yards measure different things you can't change from one to the other. Square feet measure area and yards/feet measure length/distance.
You can not convert these, yards measure distance, and square feet is a measure of area.
Yards is a measure of lenght square feet is a measure of area. It is not possible to equate the two.
The piece is 2 yards by 4 yards ie 8 square yards. Square yards is a measure of area and there are no yards (a measure of distance) in square yards.
Square feet measure area, and yards measure length. If you mean FEET in 21 yards, the answer is 63 (3 times 21). If you mean square feet in 21 SQUARE YARDS, the answer is 189 (three times three times 21).
Feet
You cannot convert between feet and square yards. Feet are a measure of length and square yards are a measure of area.
Yards can't be converted to cubic feet. Yards measure length, while cubic feet measure volume.
square feet and yards measure different things you can't change from one to the other. Square feet measure area and yards/feet measure length/distance.
Miles
You can not convert these, yards measure distance, and square feet is a measure of area.
It depends. It would be smartest to use miles, but you could use feet or yards. You can actually use any unit of measurement you would like.
It is 120 feet because 120/3 = 40 yards
Yards is a measure of lenght square feet is a measure of area. It is not possible to equate the two.
You can measure it in inches, yards or feet - it depends on the accuracy required.
The piece is 2 yards by 4 yards ie 8 square yards. Square yards is a measure of area and there are no yards (a measure of distance) in square yards.
Feet