Area of a 20 Foot Circle

What is the area of a circle with a DIAMETER of 20 feet (radius of 10 feet)? How big is a 20 foot circle?

Diameter

meters

Diameter

yards

Units

Area of a 20′ diameter circle

results may be rounded

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

Area = π * (Diameter / 2)²

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

Circle Area by Diameter

results may be rounded

Diameter	ft²	in²	m²
20′0″	314.2	45,240	29.19
20′1″	316.8	45,620	29.43
20′2″	319.4	46,000	29.67
20′3″	322.1	46,380	29.92
20′4″	324.7	46,760	30.17
20′5″	327.4	47,140	30.42
20′6″	330.1	47,530	30.66
20′7″	332.8	47,920	30.91
20′8″	335.5	48,310	31.16
20′9″	338.2	48,700	31.42
20′10″	340.9	49,090	31.67
20′11″	343.6	49,480	31.92