Area of a 20 Centimeter Circle
What is the area of a circle with a DIAMETER of 20 cm (radius of 10 cm)? How big is a 20 centimeter circle?
Diameter
cm
Diameter
ft
in
Diameter
meters
Diameter
yards
Units
Area of a 20cm diameter circle
314.16 | square centimeters |
0.031416 | square meters |
48.695 | square inches |
0.33816 | square feet |
0.037573 | square 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.