Radius
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In geometry, the radius of a circle or sphere is the shortest connection between the center and the boundary. It is half of the diameter.
r= d ÷ 2
d= 2 x r = d= r + r
r= Radius d= Diameter
The relationship between the radius and the circumference of a circle is
The area of a circle of radius is
Related pages[change | change source]
Other websites[change | change source]
- Definition and properties of the radius of a circle with interactive applet