Area 51 has never been declared a public hub.
  The are was the original unit of area in the metric system, with:1 are = 100 square metresThough the are has fallen out of use, the hectare is still commonly used to measure land:1 hectare = 100 ares = 10,000 square metres = 0
A version of the isoperimetric inequality for triangles states that the triangle of greatest area among all those with a given perimeter is equilateral

