Area of a 36 Inch Circle

What is the area of a circle with a DIAMETER of 36 inches (radius of 18 inches)? How big is a 36 inch circle?
ft
in
Area of a 36″ diameter circle
1,017.9square inches
7.0686square feet
0.78540square yards
6,566.9square centimeters
0.65669square meters
(results may be rounded)

Area of a Circle Formula

The area of a circle is pi times the square of its radius. The radius is half the diameter.

Area = π * (Diameter / 2)2

Diameter of a Circle

The diameter of a circle is the distance from one edge to the other, passing through the center. It is twice the radius.

Diameter
Circle Area by Diameter
(results are rounded)
Diameter in2 ft2 cm2
36.0 in 1,018 7.069 6,567
36.1 in 1,024 7.108 6,603
36.2 in 1,029 7.147 6,640
36.3 in 1,035 7.187 6,677
36.4 in 1,041 7.227 6,714
Diameter in2 ft2 cm2
36.5 in 1,046 7.266 6,751
36.6 in 1,052 7.306 6,788
36.7 in 1,058 7.346 6,825
36.8 in 1,064 7.386 6,862
36.9 in 1,069 7.426 6,899