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Un article trouvé pour ce sujet.
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The inradius of an icosahedron |
2010-01-21 |
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fnavroth pose la question :
Suppose you have an equilateral triangle.
The area of the triangle is exactly 1200 square centimetres.
Now suppose you have twenty of those triangles.
It's possible to assemble those twenty triangles into a closed
three-dimensional shape, a regular polyhedron.
What would be the volume, in cubic centimetres, of the largest sphere
that could fit inside the shape?
Chris Fisher lui répond. |
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