Area of a circle of Cnidus in the fifth century B.C. had found that the area of a disk is proportional to its radius squared. Archimedes used the tools of Euclidean geometry to show that the area inside a circle is equal to that of a right triangle whose base has the length of the circle's circumference and whose height equals the circle's radius in his book "Measurement of a Circle". The circumference is 2"r", and the area of a triangle is half the base times the height, yielding the area "r" for the disk. Prior to Archimedes, Hippocrates of Chios was the first
The Width of a Circle David Bowie" in 1974. The Width of a Circle "The Width of a Circle" is a song written by David Bowie in 1969 for the album "The Man Who Sold the World", recorded in Spring 1970 and released later that year in the United States and in April 1971 in the UK. It is the opening track to the album, a hard rocker with heavy metal overtones. Bowie had performed a shorter version of the song in concerts for several months before recording it. Featuring Mick Ronson's lead guitar work and occasional choral effects from the band, this 8-minute song