Area of a 90 Centimeter Circle

What is the area of a circle with a DIAMETER of 90 cm (radius of 45 cm)? How big is a 90 centimeter circle?
cm
Area of a 90cm diameter circle
6,361.7square centimeters
0.63617square meters
986.07square inches
6.8477square feet
0.76086square 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
90.0 cm 6,362 986.1 6.848
90.1 cm 6,376 988.3 6.863
90.2 cm 6,390 990.5 6.878
90.3 cm 6,404 992.7 6.893
90.4 cm 6,418 994.9 6.909
Diameter cm2 in2 ft2
90.5 cm 6,433 997.1 6.924
90.6 cm 6,447 999.3 6.939
90.7 cm 6,461 1,001 6.955
90.8 cm 6,475 1,004 6.970
90.9 cm 6,490 1,006 6.985