The plural of radius is radiuses, and the plural of Prius is Priuses.

What is the plural form for radius?

noun. ra·​di·​us | \ ˈrā-dē-əs \ plural radii\ ˈrā-​dē-​ˌī \ also radiuses.

Why is the plural of radius radii?

Because with [radi]us the stem is "radi" but with [vir]us the stem is "vir". These words are from the same type (second declension) they both receive an -i affix in plural, hence radi + i = radii, vir + i = viri.

Can you say radiuses?

The plural of radius is radiuses, and the plural of Prius is Priuses. I am so tired of comments where people make up 'funny' pseudo-Latinate plurals. According to every dictionary I can find[1], radii is at least as accepted as radiuses.

Is radii plural or singular?

a plural of radius.

What is the Radius of a Circle? | What is the Diameter of a Circle? | Radius and Diameter Explained

39 related questions found

Is diameter a radius?

The diameter is defined as twice the length of the radius of a circle. The radius is measured from the center of a circle to one endpoint of the circle, whereas, the distance of diameter is measured from one end of the circle to a point on the other end of the circle, passing through the center.

How do you write radius?

How to Find the Radius of a Circle?

1. When the diameter is known, the formula for the radius of a circle is: Radius = Diameter / 2.
2. When the circumference is known, the formula for the radius is: Radius = Circumference / 2π
3. When the area is known, the formula for the radius is: Radius = ⎷(Area of the circle / π)

Is radius half of diameter?

The radius of a circle is the length of the line segment from the center of a circle to a point on the circumference of the circle and diameter is a line segment from one end of the circle to the other end of the circle passing through the center of the circle. So, the radius is half the length of the diameter.

What is plural for focus?

noun. fo·​cus | \ ˈfō-kəs \ plural foci\ ˈfō-​ˌsī also -​ˌkī \ also focuses.

What is a singular word for radii?

Singular. radius. Plural. radii or radiuses. The plural form of radius; more than one (kind of) radius.

What is the plural form of Eskimo?

1 plural Eskimo or Eskimos, now sometimes offensive, see usage paragraph below : a member of a group of indigenous peoples of southwestern and northern Alaska, arctic Canada, Greenland, and eastern Siberia.

What is Cliff plural?

cliff /ˈklɪf/ noun. plural cliffs. cliff. /ˈklɪf/ plural cliffs.

How do you use radius in a sentence?

Examples of 'radius' in a sentence radius

1. So its radius is 15 miles. ...
2. They were yesterday combing a mile radius around the scene. ...
3. Keep one mile radius from this restaurant if the weather's good. ...
4. This is clear for the circle, which is defined as the shape with a fixed radius from the centre.

How many radius can you see name them?

Thus every circle has an infinite number of radii. This is because the number of points on the circumference of the circle is infinite. So there can be an infinite number of lines joining them to the center. If we are placing 2 radii end-to-ending a circle, then we would have the same length as the diameter.

Is it true that two radii always have the same length?

Two radii always have the same length. ... Two chords always have the same length. 3. All chords are diameters.

How do you write diameter?

The symbol or variable for diameter, ⌀, is sometimes used in technical drawings or specifications as a prefix or suffix for a number (e.g. "⌀ 55 mm", indicating that it represents diameter).

What is the difference between diameter and radius?

While the radius of a circle runs from its center to its edge, the diameter runs from edge to edge and cuts through the center. ... Radius and diameter are close friends – a circle's radius is half the length of its diameter (or: a circle's diameter is twice the length of its radius).

How do you remember the radius and diameter?

Students have a hard time remembering which line is the diameter in a circle, and which is the radius. Show them this memory trick: when written alongside each other, "d" (diameter) is twice as tall as "r" (radius)! This reminds them that the diameter of a circle is twice the length of the radius.

Is radii an English word?

Radii is the plural of radius.

What is the plural of stratum?

noun. stra·​tum | \ ˈstrā-təm , ˈstra- \ plural strata\ ˈstrā-​tə , ˈstra-​ \

What is plural form of datum?

plural data\ -​tə \ or datums.