MathDB
Pyramid Glued to Tetrahedron

Source: 1988 IrMO Paper 1 Problem 1

September 28, 2017
geometry3D geometrypyramidtetrahedron

Problem Statement

A pyramid with a square base, and all its edges of length 22, is joined to a regular tetrahedron, whose edges are also of length 22, by gluing together two of the triangular faces. Find the sum of the lengths of the edges of the resulting solid.