Area of 30 inch circle = pi*302 sq inches
Area of 18 inch circle = pi*182 sq inches
Difference = pi*(302 - 182) = 576*pi sq inches
1 sq foot = 1 ft*1 ft = 12 inches*12 inches = 144 sq inches
so 576*pi sq inches = 576/144 *pi sq ft = 4*pi sq ft = 12.57 sq ft.
A circle with a diameter of 77 feet will cover 4657 square feet.
Area of the circle in square feet = pi*radius2
There are about 38.48 square feet in a 7' diameter circle
A circle with a diameter of 18 feet has an area of 254.5 square feet.
A circle with a diameter of 24 feet has an area of 452 square feet.
314 square feet.
1256.64 square feet
A circle with a diameter of 156 feet has an area of 19113 square feet (approx).
Area of the circle in square feet: pi*radius squared
About 1,963.49 square feet.
The area of a circle with radius r feet is pi*r*r square feet.
There are: 99225*pi square feet