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Because of the radius of the circle

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Q: Why is Pi used to calculate circumference and area of circles?
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How do you use pi in everyday mathamaics?

Pi is used in many different places.The most obvious one is to calculate several things related to circles and spheres: for example, calculate the circumference and the area of a circle if you know the radious, or calculate the surface area and the volume of a sphere if you know the radious.Pi is also used in certain situations where there is no connection to circles. For example, in certain integrals (to calculate the area under certain functions).Pi is used in many different places.The most obvious one is to calculate several things related to circles and spheres: for example, calculate the circumference and the area of a circle if you know the radious, or calculate the surface area and the volume of a sphere if you know the radious.Pi is also used in certain situations where there is no connection to circles. For example, in certain integrals (to calculate the area under certain functions).Pi is used in many different places.The most obvious one is to calculate several things related to circles and spheres: for example, calculate the circumference and the area of a circle if you know the radious, or calculate the surface area and the volume of a sphere if you know the radious.Pi is also used in certain situations where there is no connection to circles. For example, in certain integrals (to calculate the area under certain functions).Pi is used in many different places.The most obvious one is to calculate several things related to circles and spheres: for example, calculate the circumference and the area of a circle if you know the radious, or calculate the surface area and the volume of a sphere if you know the radious.Pi is also used in certain situations where there is no connection to circles. For example, in certain integrals (to calculate the area under certain functions).


Pi can be used to calculate the blank of a circle?

Pi can be used to calculate the area of a circle Pi can be used to calculate the circumference of a circle


How is pi used to calculate the circumference?

pi times diameter = circumference


What do people use pi for?

Since pi is the ratio of the circumference of any circle to its diameter, it comes up any time a radius or diameter is used to calculate most other characteristics of a circle or a sphere, such as circumference, area, surface area or volume, or whenever any of those characteristics are used to calculate a radius or diameter.


Why circumference is not coming for other shapes?

The word "circumference" is used for circles and circular shapes, such as ellipses and ovals. For other plane shapes, the word used is perimeter.

Related questions

How do you use pi in everyday mathamaics?

Pi is used in many different places.The most obvious one is to calculate several things related to circles and spheres: for example, calculate the circumference and the area of a circle if you know the radious, or calculate the surface area and the volume of a sphere if you know the radious.Pi is also used in certain situations where there is no connection to circles. For example, in certain integrals (to calculate the area under certain functions).Pi is used in many different places.The most obvious one is to calculate several things related to circles and spheres: for example, calculate the circumference and the area of a circle if you know the radious, or calculate the surface area and the volume of a sphere if you know the radious.Pi is also used in certain situations where there is no connection to circles. For example, in certain integrals (to calculate the area under certain functions).Pi is used in many different places.The most obvious one is to calculate several things related to circles and spheres: for example, calculate the circumference and the area of a circle if you know the radious, or calculate the surface area and the volume of a sphere if you know the radious.Pi is also used in certain situations where there is no connection to circles. For example, in certain integrals (to calculate the area under certain functions).Pi is used in many different places.The most obvious one is to calculate several things related to circles and spheres: for example, calculate the circumference and the area of a circle if you know the radious, or calculate the surface area and the volume of a sphere if you know the radious.Pi is also used in certain situations where there is no connection to circles. For example, in certain integrals (to calculate the area under certain functions).


Pi can be used to calculate the blank of a circle?

Pi can be used to calculate the area of a circle Pi can be used to calculate the circumference of a circle


How did the name pi get used for math?

pi is a letter in the greek alphabet (π) which in math represents the irrational number value of 3.141592653589793238462... we use pi as a variable instead of writing out the endless decimal everytime it is used. By this, we can calculate the area and circumference of circles, you can find the area by πr2 which r is the radius or radii, and to find the circumference it is 2πr.


How can a compass help in math?

A compass can be used to calculate distance by angle and to help draw circles as well as finding the radius, diameter, and circumference of the circle.


How is pi used to find circumference of circles?

Pi times the diameter of a circle gives its circumference.


What is the circumference of UK in miles?

Okay, for starters, circumference is used only for circles and spheres. the UK is neither so therefore it has no circumference.


How is pi used to calculate the circumference?

pi times diameter = circumference


How is pi used to find the circumference of circles?

Circumference of any circle = 2*pi*radius or pi*diameter


Why is pi an important number?

It is used in geometry to calculate (among other things) circumference and area within circles and other curved figures, and the volume of spheres, spheroids, and cylinders. It provides the length of a curved line when it cannot be directly measured, or is generated by an angle.


Why is circumference only used for circles?

Circumference is analogous to perimeter, it's just a different name. Circumference can also be applied to ellipses and other curved figures.


What do people use pi for?

Since pi is the ratio of the circumference of any circle to its diameter, it comes up any time a radius or diameter is used to calculate most other characteristics of a circle or a sphere, such as circumference, area, surface area or volume, or whenever any of those characteristics are used to calculate a radius or diameter.


Why circumference is not coming for other shapes?

The word "circumference" is used for circles and circular shapes, such as ellipses and ovals. For other plane shapes, the word used is perimeter.