Area of a 30 Centimeter Circle
What is the area of a circle with a DIAMETER of 30 cm (radius of 15 cm)? How big is a 30 centimeter circle?
Diameter
cm
Diameter
ft
in
Diameter
meters
Diameter
yards
Units
Area of a 30cm diameter circle
| 706.86 | square centimeters |
| 0.070686 | square meters |
| 109.56 | square inches |
| 0.76086 | square feet |
| 0.084540 | 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.