Area of a 80 Centimeter Circle

What is the area of a circle with a DIAMETER of 80 cm (radius of 40 cm)? How big is a 80 centimeter circle?
cm
Area of a 80cm diameter circle
5,026.5square centimeters
0.50265square meters
779.12square inches
5.4105square feet
0.60117square yards
(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 cm2 in2 ft2
80.0 cm 5,027 779.1 5.411
80.1 cm 5,039 781.1 5.424
80.2 cm 5,052 783.0 5.438
80.3 cm 5,064 785.0 5.451
80.4 cm 5,077 786.9 5.465
Diameter cm2 in2 ft2
80.5 cm 5,090 788.9 5.478
80.6 cm 5,102 790.8 5.492
80.7 cm 5,115 792.8 5.506
80.8 cm 5,128 794.8 5.519
80.9 cm 5,140 796.7 5.533