C A be not the area of the circle whose radius is C A, it must be the area of a circle either greater or less. ... C A ; in other words, it is impossible; that the circumference of a circle multiplied by half its radius can be the measure of a greater circle. ... denoted by ir ; then, because circumferences are to each other as their radii or diameters, we shall have the diameter 1 ... to the number above designated by tt ai and the simplicity of this first approximation has brought it into very general use.
|Title||:||Encyclopaedia Metropolitana: Pure sciences|
|Author||:||Samuel Taylor Coleridge|