Proof without words :Sum of the cube

http://dmentrard.free.fr/GEOGEBRA/Maths/Export6/NicomusMD.html
[url=http://dmentrard.free.fr/GEOGEBRA/Maths/Export6/NicomusMD.html]http://dmentrard.free.fr/GEOGEBRA/Maths/Export6/NicomusMD.html[/url]
– Daniel Mentrard

Information: Proof without words :Sum of the cube