Area of the circle Calculator
Chooose a Calculations
Answer table :
| radius | r = |
| diametere | d = |
| circumference | C = |
| area | A = |
USE OF THE CALCULATOR -
Use this Area of the circle calculator to find Area of the circle, radius of the circle, diameter of the circle, circumference of the circle by just putting any one of the value
According to the definition of the circle it is a simple closed shape. It is a shape which consist all the points in a plane that gives a distance from a given points which is called center. A circle is also be defined as equivalent curve traced out by a point which is move in a plane so that it’s distance from a given point is constant. Let’s discuss the values of the circle which helps us to find Area of the circle and other values:
Radius – Is defined as the distance between any one point of a circle to the center
of the circle. It is denoted by ‘r’
Diameter – It is defined as the largest
distance between any two points on a circle. It is denoted by ‘d’
Circumference – Is defined as the length of a circuit along the
circle or the distance around the circle. It is denoted by ‘C’
All the values above are expressed and related to the mathematical constant pi which is denoted by Greek letter π. The π is the ratio of the circumference ‘C’ of any circle to it’s diameter ‘d’. The approx. Value of the Pi is 3.14159 and it is an irrational number it means π cannot tell exactly as a fraction because it is approximated as 22/7.
As π is a transcendental number it is not the root of any non-zero, polynomial that has rational coefficients.
Strikingly, the confirmation by Ferdinand von Lindemann in 1880 that π is supernatural at last shut down the centuries old journey that started with antiquated geometer of "squaring the circle." This included endeavoring to build a square with similar zone as a given hover inside a limited number of steps, just utilizing a compass and straightedge.
While it is currently realized this is
inconceivable, and envisioning the enthusiastic endeavors of bothered
antiquated geometer endeavoring the unimaginable by candlelight may summon a
preposterous picture, recall that it is because of individuals like these that
so numerous numerical ideas are very much characterized today.
History – In Ancient era there are no Area of the circle Calculator. The Egyptians
was first calculated the area of the
circle by the formula which gave the approx. Value 3.1605 of the π. Whereas the
first calculations of π was firstly done by Archimedes in 287-212 BC.
Formulas of the Circle :
How is the area of a circle calculated?
How do you find area with diameter?
How do you find the circumference and area of a circle?
What are all the formulas for a circle?
Ans -
1. r is given || Find A, C & d
A = πR2
C = 2πR
d = 2R
2. A is given || Find r, C & d
R = √A/π
C = 2πR
d = 2R
3. C is given || Find A, r, & d
R = C/2π
A = πr2
d = 2R
4. d is given || Find A, r, & C
R = D/2
A = πr2
C = 2πR
where:
R: Radius
D: Diameter
C: Circumference
A: Area
π: 3.14159
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