Circle of Animals/Zodiac Heads 1860 during the Second Opium War, at which time the fountainheads were looted. They were originally made by an Italian Jesuit, Giuseppe Castiglione. In May 2015, Sean Parker paid US$4.4 million at Phillips for the small (gold) version of the 12-sculpture work by Ai Weiwei. In June 2015, a large (bronze) version sold at auction for $5.4 million. Circle of Animals/Zodiac Heads Circle of Animals/Zodiac Heads is an artwork by Chinese contemporary artist and political commentator, Ai Weiwei. The work comes in a small (gold) and large (bronze) version. Created in 2010, the zodiac heads (a Rat, Ox, Tiger, Rabbit,
Area of a circle a formula for the surface area, we can use the same kind of “onion” approach we used for the disk. Area of a circle In geometry, the area enclosed by a circle of radius is . Here the Greek letter represents a constant, approximately equal to 3.14159, which is equal to the ratio of the circumference of any circle to its diameter. One method of deriving this formula, which originated with Archimedes, involves viewing the circle as the limit of a sequence of regular polygons. The area of a regular polygon is half its perimeter multiplied by the distance from