Area of a 31 Foot Circle

What is the area of a circle with a DIAMETER of 31 feet (radius of 15.5 feet)? How big is a 31 foot circle?

Diameter

meters

Diameter

yards

Units

Area of a 31′ 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
31′0″	754.8	108,700	70.12
31′1″	758.8	109,300	70.50
31′2″	762.9	109,900	70.88
31′3″	767.0	110,400	71.26
31′4″	771.1	111,000	71.64
31′5″	775.2	111,600	72.02
31′6″	779.3	112,200	72.40
31′7″	783.4	112,800	72.78
31′8″	787.6	113,400	73.17
31′9″	791.7	114,000	73.55
31′10″	795.9	114,600	73.94
31′11″	800.1	115,200	74.33