Area of a 8 Centimeter Circle

What is the area of a circle with a DIAMETER of 8 cm (radius of 4 cm)? How big is a 8 centimeter circle?
Diameter
cm
Diameter
ft
in
Diameter
meters
Diameter
yards
Units
Area of a 8cm diameter circle
50.265square centimeters
0.0050265square meters
7.7912square inches
0.054105square feet
0.0060117square 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 may be rounded
Diameter cm2 in2 ft2
8.0 cm 50.27 7.791 0.05411
8.1 cm 51.53 7.987 0.05547
8.2 cm 52.81 8.186 0.05684
8.3 cm 54.11 8.386 0.05824
8.4 cm 55.42 8.590 0.05965
8.5 cm 56.75 8.795 0.06108
8.6 cm 58.09 9.004 0.06253
8.7 cm 59.45 9.214 0.06399
8.8 cm 60.82 9.427 0.06547
8.9 cm 62.21 9.643 0.06696