Area of a 45 Centimeter Circle
What is the area of a circle with a DIAMETER of 45 cm (radius of 22.5 cm)? How big is a 45 centimeter circle?
Diameter
cm
Diameter
ft
in
Diameter
meters
Diameter
yards
Units
Area of a 45cm diameter circle
| 1,590.4 | square centimeters |
| 0.15904 | square meters |
| 246.52 | square inches |
| 1.7119 | square feet |
| 0.19021 | 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.