78.53981634 or 79 square feet rounded to the nearest square foot.
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The area of a 10 foot circle is: 78.54 square units.
Area of a circle = (pi) (radius)2Radius = 1/2 of diameterArea = (pi) (10)2 = 100 pi = 314.16 square feet (rounded)
The area of a circle is computed by the formula A = pi * r2 (r is the radius of the circle)For a 20 foot circle, the radius is 10 feet and the area is 314.16 square feet.
Area of the circle is about 10 square units
78.53981634 square units