Circle Circumference Formula
Circumference of a circle is the length of the boundary surrounding the circle. The Circumference of a circle is equal to twice the product of the numerical constant π and the radius ‘r’. The mathematical expression for Circumference Formula is given as follows:
Circumference of Circle Formula in terms of Radius
If C is the circumference of the circle and r is the radius of the circle then, Circumference of the circle is given as
C = 2πr
Circumference of Circle Formula in terms of Diamter
If C is the Circumference of the circle and ‘d’ is the diameter of the circle then the Circumference of the Circle is given as
C = πd
where, d = 2r
In both the above formulas, the value of π is constant and equal to approximately 3.14 in decimal and 22/7 in fractional form. The exact value of π can’t be found exactly. π is an irrational number.
Circumference Formula
Circumference Formula as the name suggests is the formula for calculating the circumference of a circle and as we know the circumference of a circle is defined as the length of the boundary of the circle. For ease of understanding, Circumference is the perimeter of the circle.
Circumference Formula is given by the product of twice the radius and the constant value π. A circle is a two-dimensional curved figure and a bangle is one of the best examples of the Circle. In this article, we will learn about the Circumference Formula and also learn how to calculate the Circumference of a Circle using Circumference Formula. We will also learn the Circumference Formula for semicircles, spheres, and other 3D objects whose at least one face is circular in nature.
Table of Content
- What is the Circumference Formula?
- Circle Circumference Formula
- Semi Circle Circumference Formula
- Circumference Formula for Some Other Curved Objects
- Sample Problems on Circumference Formula