Area = pi x r x r = 3.1415 x 12 x 12 = 3.1415 x 144 = 452.376 square feet
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24 feet - you answered your own question !
The formula for the area (A) of a circle is A = π r2 - where r is the radius. The diameter (d) of a circle is twice the radius. The area of circle having a diameter of 24 ft is A = π 122 = 144π = 452.39 sq ft (2dp)
74.4 ft2
The area of a circle with a diameter of 24 yards is: 452.4 square yards OR 4,071.6 square feet.
The circle's area is 452.39 inches2