4080 square feet = 4080/9 square yards = 453 1/3 square yards
945 square feet of carpet. (just multiply square yards by nine to get square feet).
You need 166.66 square yards of carpet.
784 square feet requires a minimum of 87.1 square yards of carpet.
20 square yards
55 yards of carpet is 495 square feet. 55 x 9 = 495
133.33 square yards of carpet
59 square feet = 65/9 square yards
900 square feet.
Total square yards: 88.89
13' x 15' (195 square feet) = 21.67 square yards of carpet needed.
28' x 14' (392 square feet) = 43.5 square yards of carpet needed.
A yard is 3 feet by 3 feet in carpet terms, or 9 square feet; for 100 square feet you need 100/9 = about 11 yards