The noun radii is already a plural. The singular is radius.
The plural of radius is radii
Radii
The plural of "radius" is "radii." This term is commonly used in mathematics and physics to refer to multiple radii of circles or spheres. In general usage, "radius" can also be pluralized as "radius" in some contexts, but "radii" is the standard plural form.
radius = radii.
The plural of 'radius' is 'radii', not 'radiuses'. A circle has an infinite number of radii, but they are all of the same length.
It is radii which is the plural of radius
Classically, the plural should be radii, (usually pronounced ray-dee-eye) because 'radius' is a Latin word.However, in modern English, radiuses is acceptable.
The plural of radius is radii.
The plural of radius is radii
The plural of radius is radii. As in "the radii is a straight line extending from the centre of a circle to the circumference"
radii
Radii
Radii
radii
Radii.
The plural form of radius is radii.
The plural of radius is radii.