To calculate the square footage of a circle, you will first need to determine the length of the circle's radius. The radius of a circle is the distance from the center of the circle to the circle's outside edge, or perimeter. Once you have the length of the radius, multiply it by itself, or, in other words, square it. Multiply the square of the radius by pi, which is always 3.14. The result you get is the amount of square footage in the circle.
To calculate the square footage of a circle, you will first need to determine the length of the circle's radius. The radius of a circle is the distance from the center of the circle to the circle's outside edge, or perimeter. Once you have the length of the radius, multiply it by itself, or, in other words, square it. Multiply the square of the radius by pi, which is always 3.14. The result you get is the amount of square footage in the circle.
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