A football is a round ball made of small hexagonal pieces. A perfectly round ball joined by pieces of flat leather is a geometric marvel. In AD 1954, an engineer named Buckminster Fuller created a giant sphere by joining identical sized triangular pieces of metal. These spheres are supported by each other on the three sides of the triangle. Such a hemispherical dome becomes a huge dome, this dome does not even need the support of a pillar. This dome is called a geodesic dome. Sports stadiums will also be built under it. The Space to Earth Dome in Disneyland, Florida is world famous. Planetariums and observatories are shaped like geodesic domes. The Calimatrin Greenhouse at the Missouri Botanical Garden in the US is a geodesic dome shape. Its diameter is 42 meters and height is 21 meters. It is made of hexagons of aluminum rods. The world's largest Fukuoka Dome in Japan is 216 meters in diameter. It can seat 38561 spectators to enjoy sports and events.
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