# Cube (Geometry)

Pronunciation: /kjub/ Explain
 Click on the blue point and drag it to change the figure. Manipulative 1 - Rotating Cube Created with GeoGebra.

A cube is a 3-dimensional geometric figure with straight edges that are all the same length. The faces of a cube are all congruent squares.

Formulas for a Cube
DescriptionFormula
VolumeV = s3
Surface areaS = 6s2

### Make a Cube

 Figure 2: Net for a cube.

A cube may be made using a net - a flat shape that can be folded into a cube. Click here to see a printable net for a cube with instructions.

### Cubes in Nature

 Figure 3: Salt Crystals.

Ordinary table salt crystals forms naturally into cubes. Figure 3 shows salt crystals magnified 100 times. Figure 4 is a diagram of a salt crystal.

 Figure 4: Salt Crystal Diagram.

### References

1. McAdams, David E.. All Math Words Dictionary, cube. 2nd Classroom edition 20150108-4799968. pg 51. Life is a Story Problem LLC. January 8, 2015. Buy the book

McAdams, David E. Cube (Geometry). 4/16/2019. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/c/cube.html.

### Revision History

4/16/2019: Updated equations and expressions to new format. (McAdams, David E.)
12/21/2018: Reviewed and corrected IPA pronunication. (McAdams, David E.)