9 sq feet = 1 sq yard so 15*20 = 300 sq ft = 33.33... sq yards
About 44 1/2 square yards. (20' x 20' = 400 square feet = 400/9 square yards = 44.44444 square yards)
12 feet = 4 yards, 15 feet = 5 yards, 4 X 5 = 20 Square yards. 9 sq. ft. per sq. yd., 20 sq. yds = 180 sq. ft.
180 square feet = 20 square yards.
That would be 400 square feet. A square yard is 9 square feet. Divide 400 by 9 and you get 44.4 Square yards.
12' x 15' (180 square feet) = 20 sq. yards.
1 yard = 3 feet4 yards = 12 feet5 yards = 15 feet4 yards x 5 yards = 20 sq yards12 feet x 15 feet = 180 sq feet
20 yards in 60 feet
60 feet are 20 yards.
15 + 15 + 20 + 20 = 70 feet 70/3 is 23.1 yards, which means she need to buy 24 yards.
15 x 20 is 300 square feet or 100 square yards.
20 square yards are needed
20 feet is 6.67 yards.
20 yards = 60 feet
20 yards x 3 feet (in a yard) = 60 feet 60 feet are in 20 yards
3 feet equals 1 yard and so 4 times 5 = 20 square yards
60 yards is equivalent to 180 feet - as there are 3 feet in every yard.