# how to find the radius of a cone

## What is the formula for finding the radius of a cone?

You can find a radius through its volume and height.

**Multiply the volume by 3**. For example, the volume is 20. Multiplying 20 by 3 equals 60.## How do you find the radius?

**How to Find the Radius of a Circle?**

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

## How do you find the height and radius of a cone?

The cone height formula calculates the height of the cone. The height of the cone using cone height formulas are,

**h = 3V/πr**, where V = Volume of the cone, r = Radius of the cone, and l = Slant height of the cone.^{2}and h = √l^{2}– r^{2}## How do you find the radius of a cone without the height?

## How do you find the radius of a cone without volume and height?

## What is the diameter of a cone?

How do I find the diameter of a cone? To use the height and volume of a cone to find diameter:

**Multiply the volume of the cone by 3.****Divide the resultant number by pi times the height**.## How do you find the radius when you have the circumference?

**To find the radius from the circumference of a circle, you have to do the following:**

- Divide the circumference by π, or 3.14 for an estimation. The result is the circle’s diameter.
- Divide the diameter by 2.
- There you go, you found the circle’s radius.

## How do you find the radius of a sphere if you know the volume?

Answer: To find the radius of a sphere with the volume, we use the formula:

**r = (3V/4π)**## How do you find the diameter of a cone with the volume?

For some cone with the volume of 441𝜋 cubic centimeters and a height of 12 centimeters, we want to know the diameter. Recall that the volume of any cone is equal to

**one-third 𝜋 times the radius squared times the height**.## What is the formula for a cone with diameter?

To find the diameter (d) of a cone of volume V and height h, we just substitute all of them in the formula

**V = (1/12) πd**and solve for d.^{2}h## How do you find radius from volume?

Given diameter: r = d / 2 , Given area: r = √[A / (4 * π)] , Given volume:

**r = ³√[3 * V / (4 * π)]**, Given surface to volume ratio: r = 3 / (A/V) .## What is the radius of a sphere with a volume of 36 pi?

1 Expert Answer

The radius is **3 units**.

## Is radius half of diameter?

**A radius is half the length of the diameter**.

## How do you find the radius from the area?

To find the radius,

**divide the area by pi, then take the square root**.## How do you find the radius of a 3D circle?

Sphere’s are the 3D representations of circles. The equation of a sphere is similar to that of a circle, but with an extra variable for the extra dimension.

**(x−h)2+(y−k)2+(z−l)2=r2**In this equation, r=radius.## What is the radii in a circle?

Radius of a circle is

**the distance from the center of the circle to any point on it’s circumference**. It is usually denoted by ‘R’ or ‘r’. This quantity has importance in almost all circle-related formulas. The area and circumference of a circle are also measured in terms of radius. Circumference of circle = 2π (Radius)## How do you find the radius and diameter of a circle?

## What is radius plural?

noun. ra·di·us | \ ˈrā-dē-əs \ plural

**radii**\ ˈrā-dē-ˌī \ also radiuses.## Is the radii the radius of a circle?

**A radius is a straight line from the center of a circle to the circumference of a circle**. If you have two or more of them, they are referred to as radii. All radii in a circle will be the same length. If you put two radii together, edge to edge, going through the center of a circle, you would get a diameter.

## What is the length of a radii?

The radius is kind of the basic unit of a circle: its length is

**the distance from the center of a circle to any point on its circumference**and it forms the basis for the radian. You can use the length of a circle’s radius to find its circumference (C=2πr), its area (A=πr2), and its diameter (d=2r).## What are radii in math?

1.

**a straight line extending from the center of a circle or sphere to the circumference or surface**: The radius of a circle is half the diameter.