A circle with a radius of 2.00 feet has an area of 12.57 square feet.
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200*pi feet, or approximately 628 feet. The formula for the circumference of a circle is C = 2*pi*r.
The center of a 200-foot radius is the point that is exactly 200 feet away from any point on the circumference of the circle. If you visualize a circle, the center is the point from which all points on the circle are equidistant. This center point can be described by its coordinates, depending on the specific location of the circle.
Divide the diameter by 2, to get the radius. Then use the formula for the area of a circle:area = pi x radius squared
A square, with sides of 200 feet has an area of 200*200 = 40,000 square feet.