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# Sphere - Radius from Volume

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Equation / Last modified by KurtHeckman on 2017/12/30 23:28
`r = `

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vCalc.Sphere - Radius from Volume

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ff72de4c-d5e6-11e7-abb7-bc764e2038f2

The **Radius of a Sphere from the Volume** calculator computes the radius (**r**) based on the volume of a sphere (**V**). * Geometric Sphere*

**INSTRUCTIONS:** Choose the preferred units and enter the following:

- (
**V**) This is the Volume of the Sphere.

**Sphere Radius:** The Radius of the Sphere (**r**) is returned in meters. However, this can be automatically converted to other length units (e.g. feet) via the pull-down menu.

**Related Calculators:**

- Compute the Volume of a Sphere
- Compute the Surface Area of a Sphere
- Compute the Mass or Weight of a Sphere
- Compute the Radius of a Sphere from the Volume
- Compute the Radius of a Sphere from the Surface Area
- Compute the Surface Area of a Sphere from the Volume of a Sphere
- Compute the Volume of a Sphere from the Surface Area

### The Math

The equation for the volume of a sphere is as follows:

If we solve for the radius (**r**), we have the formula in this calculator:

`r = ( 3/(4π)•V ) ^(1/3)`