Area of a 42 Foot Circle
What is the area of a circle with a DIAMETER of 42 feet (radius of 21 feet)? How big is a 42 foot circle?
Diameter
cm
Diameter
ft
in
Diameter
meters
Diameter
yards
Units
Area of a 42′ diameter circle
| 1,385.4 | square feet |
| 199,500 | square inches |
| 153.94 | square yards |
| 0.031805 | acres |
| 128.71 | square meters |
| 1,287,100 | square centimeters |
| 0.012871 | hectares |
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.