Area of the circle in square feet = pi*radius2
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If the radius of a circle is 80 inches, then the area of the circle is 139.6263 square feet. (rounded)
13.6354 square feet (rounded)
Area of circle: pi*2.75 squared = 23.758 square feet to three decimal places
Change the inches into feet and use the area formula for a circle: pi*radius squared
In general the formula for the area of any circle is: pi*radius squared