Area = Pi x radius2. Therefore, your sum is 3.1415927 x 242 = 1809.56 (rounded to 2 decimal places).
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Using 3.14 as Pi the area of circle is: 1808.6399999999999
Area of a circle = pi*radius squared
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)
The area of a circle with a radius of 14.4 is 651.4
Area of a circle = pi*radius squared