the origen of radius is spanish
gigty
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Radius is from the Latin root word radius, spoke of a wheel, a staff, a beam of light.
The circle of radius five centered at the origin.
the word 'radius-es' doesn't exist, the word 'radii' is the plural of 'radius'
Centre = (0,0), the origin; radius = 11
The word that is 2x the radius of a circle is Diameter.