48 Inch Circumference To Diameter

Circle Reckoner

Please provide any value beneath to summate the remaining values of a circle.

Radius (R)
Diameter (D)
Circumference (C)
Area (A)

While a circle, symbolically, represents many different things to many dissimilar groups of people including concepts such as eternity, timelessness, and totality, a circumvolve by definition is a simple closed shape. It is a ready of all points in a plane that are equidistant from a given point, chosen the center. Information technology tin can likewise be defined every bit a bend traced past a point where the altitude from a given point remains abiding as the point moves. The distance between any point of a circle and the center of a circle is called its radius, while the diameter of a circle is defined as the largest distance between whatever two points on a circle. Essentially, the diameter is twice the radius, equally the largest altitude between two points on a circle has to be a line segment through the middle of a circle. The circumference of a circle can exist defined as the distance around the circle, or the length of a circuit along the circumvolve. All of these values are related through the mathematical constant π, or pi, which is the ratio of a circle's circumference to its diameter, and is approximately three.14159. π is an irrational number meaning that it cannot be expressed exactly as a fraction (though it is ofttimes approximated every bit 22/vii) and its decimal representation never ends or has a permanent repeating pattern. It is also a transcendental number, meaning that information technology is non the root of any not-goose egg, polynomial that has rational coefficients. Interestingly, the proof by Ferdinand von Lindemann in 1880 that π is transcendental finally put an terminate to the millennia-old quest that began with ancient geometers of "squaring the circle." This involved attempting to construct a square with the same expanse as a given circle inside a finite number of steps, only using a compass and straightedge. While information technology is now known that this is incommunicable, and imagining the agog efforts of flustered ancient geometers attempting the impossible by candlelight might evoke a ludicrous image, it is of import to remember that it is thank you to people similar these that so many mathematical concepts are well defined today.

Circle Formulas

D = 2R

C = 2πR

A = πR²

where:

R: Radius
D: Diameter
C: Circumference
A: Area
π: 3.14159