Hey!
Cant you use YOUR brain??
There are: pi*20.52 = 1320.254 square feet to 3 decimal places
Area = pi*5.52 = 95.033 square feet to 3 d.p.
A 45-foot diameter circle has an area of 1,590.4 square feet.
There are about 38.48 square feet in a 7' diameter circle
A square yard can represent a square with dimensions of 3 feet by 3 feet. Therefore a 7 foot diameter gasket cannot be cut out of a square yard. If you meant 7 inches diameter, then you will be able to cut 25 gaskets from 3 feet by 3 feet but you may even be able to cut 26 gaskets if the square yard was a rectangle of 7 inches wide (by 185 inches long).