Volumes  
Polyhedra  
Volume of a pyramid whose base is a regular polygon. 

To find the volume of a pyramid, multiply the area of the base by the height of the pyramid and divide it by 3.  
You can
rotate the figure by moving the red dot. What you are going to measure
has to be straight. 
Eduardo Barbero Corral  
Spanish Ministry of Education , Social Afairs and Sport. Year 2007  
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