Area of a 30 Inch Circle
What is the area of a circle with a DIAMETER of 30 inches (radius of 15 inches)? How big is a 30 inch circle?
Diameter
cm
Diameter
ft
in
Diameter
meters
Diameter
yards
Units
Area of a 30″ diameter circle
| 706.86 | square inches |
| 4.9087 | square feet |
| 0.54542 | square yards |
| 4,560.4 | square centimeters |
| 0.45604 | square meters |
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.