a 24 inch circle is a 2 ft diameter circle, or a 1 ft radius circle. the area of a circle is pi * r squared, so 1 ft squared is 1 sq ft. Times pi (=3.14159) is 3.14159 sq ft
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A 36-inch diameter circle has an area of: 1,017.9 square inches.* * * * *which is 7.07 square feet.
A 20-inch diameter circle contains: 314.16 square inches.
A circle with a diameter of 300 inches has an area of 490.87 square feet.
2.77 square feet.
A 1.25-inch diameter circle contains 1.227 square inches.