From:
http://en.wikipedia.org/wiki/Tennis_court
The court is 78 feet (23.78 m) long, and its width is 27 feet (8.23 m) for singles matches and 36 feet (10.98 m) for doubles matches.[1] Additional clear space around the court is needed in order for players to reach overrun balls for a total of 60 feet (18.3 m) wide and 120 feet (36.7 m) long. A net is stretched across the full width of the court, parallel with the baselines, dividing it into two equal ends. The net is 3 feet 6 inches (1.07 m) high at the posts, and 3 feet (920 mm) high in the center.[2]
Tennis courts are generally 60' X 120' so there would be about 7200 ft^2
A tennis court is 78 ft by 36 ft so the square footage is 2808 Sq. Ft.
A standard tennis court has dimensions of 78 feet x 27 feet.
This results in an area of 2106 sq ft.
So, (2106 / 7800) * 100 = 27 percent
800 sq. ft.
50 x 95 = 4750 sq ft
1740.5 sq ft
1076.391042 sq. ft.
19681.81 sq ft
5220.5 sq ft
32 sq. ft.
1 sq yd are in 9 sq ft
3 sq yards = 3*9 sq ft = 27 sq ft
1120 sq ft
5468 sq ft
55,000 sq ft.
43055.64 sq. ft.