The formula for square footage of a circle uses the constant pi (roughly a value of 3.14) in its calculation and the length of the radius of the circle. Area of a circle equals radius x radius (R squared) x 3.14 (pi).
If we are given that information that the circle is 29 wide (diameter), we know enough to find the answer.
Since radius (R) equals 1/2 of diameter, divide 29/2=14.5
14.5 x 14.5 x 3.14= 660.18 square feet in a circle 29 feet in diameter.
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