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Q: Why is pi used in circle?

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

By definition Pi is the relation between the radius and circumference of a circle.

It is used to find the area of a circle as pi*radius2

Pi is used to find area and circumference of a circle.

the way to use pi is to find the circuference of a circle

Pi can be used to find a circle, For the circumference-Pi x D, or for the radius Pi x r2

To find out the area of a circle.

It is a Greek letter used to represent the ratio of the diameter of a circle to its circumference so you can see 'pi' (not a pi)in any circle.

Area of a circle equals pi (3.14) times the radius squared.

well pi is used to find the area of a circle A=pi x the radius squared

Pi is used in nearly every branch of math. If you need to do anything with a circle, pi was used to make that circle. Any measurement of a circle, cylinder, sphere, etc involves pi. Pi is incorporated into the GPS. All kinds of things use pi. A fun fact for pi: the actual length of a river compared to the straight distance from source to mouth will yield pi.

pi is the # 22 divided by 7. it is used to find a circle's circumfernce

The circumference of a circle can be calculated by multiplying pi by the diameter of the circle. For example if the diameter is 10 then the calculation will be pi x 10 = answer. The most commonly used value for pi is 3.14

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

Any circle will work!

This is PI, pi = 3.14159265...... A circle is the round thing, like your pies! The area of a circle is measured using (Pi)(radius to the power of 2). Circumfrance of a circle is (Pi)(Diameter of circle).

Pi is used in many ways today. The simplest way it to find the circumference (the perimeter) of a circle or the area (amount of space inside) of a circle.

pi=3.141... C divided by D. Circumference of a circle divided by the diameter of a circle.

Pi times the diameter of a circle gives its circumference.

Angular measure of a circle: 2*pi radians. Circumference of a circle with diameter d units: d*pi units

Circumference of a circle = 2*pi*radius or diameter*pi Area of a circle - pi*radius2

Circumference of a circle = 2*pi*radius or diameter*pi Area of a circle = pi*radius2

Area of a circle = pi*radius squared Circumference of a circle = 2*pi*radius or diameter*pi

It is used in finding the circumference and area of a circle. Circumference = 2*pi*radius or pi*diameter measured in linear units Area = pi*radius2 measured in square units

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