Circumference of a circle: 2*pi*radius or diameter*pi
Area of a circle: pi*radius squared
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Circle area = Pi * r^2 r = d/2 Since d=28. r=14. 28^2 = 196 The area is 196 Pi or approximately 615.75 square feet.
Assuming you meant 28 feet x 28 feet, the answer is 784 sq feet.
The area of a circle with the diameter of 28 inches is: 615.8 square inches OR 4.28 square feet.
224 square feet. (8 x 28 = 224)
252 square feet = 252/9 square yards = 28 square yards