regular pentagons on each side of regular pentagon, folding paper, volume
Source: Spanish Mathematical Olympiad 1996 P6
July 31, 2018
geometryregular polygonVolume3-Dimensional Geometry
Problem Statement
A regular pentagon is constructed externally on each side of a regular pentagon of side . The figure is then folded and the two edges of the external pentagons meeting at each vertex of the original pentagon are glued together. Find the volume of water that can be poured into the obtained container.