314 ft2
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If the circumference of a circle is 20 feet the diameter is: 6.366 feet (circumference divided by pi = diameter).
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 a circle in square feet = pi*radius2
how many linear feet in a 20 foot diameter
Circumference of a circle = 2*pi*radius or pi*diameter Area of a circle = pi*radius squared