Radii.
Classically, the plural should be radii, (usually pronounced ray-dee-eye) because 'radius' is a Latin word.However, in modern English, radiuses is acceptable.
It is radii which is the plural of radius
The plural form of radius is radii.
It is singular. The plural of "radius" is "radii" with two i's.
The Latin plural of radius is radii. (ray-dee-eye)
The plural of radius is radii.
The plural of radius is radii
The plural of radius is radii.
radius bones radii radiuses
Radii
radii
The noun radii is already a plural. The singular is radius.