The AREA of a circle that has a radius of 40ft is 5026.54825 square feet
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80 feet
The area of a circle with a radius of 14.4 is 651.4
Area of a circle = pi*radius squared
The area of a circle of radius 21 is 1386
A circle with a radius of 135 units has an area of 57,255.53 square units.