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You should know pi because of math. You need pi when you are dealing with circles. The only thing you really need to know about pi is 3.14 though.
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∙ 14y ago
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What is the whole number for pi?
pie is a never ending number it always goes on, but usually all you need to know is 3.141, but i know it to 3.141592654 :)
How do you find circumference of concentric circles?
You need to know diameter of each circle, which are different for each circle; each circle circumference is pi x diameter where pi = 3.14159
Can the cumference of a circle be found?
Yes. you need to know the diameter or radius of the circle and then the formula is:- Circumference = Pi*Diameter or Circumference = 2Pi*Radius. An approximate value for Pi is 3.14159.
How do you calculate the area of a circle when you have the diameter?
All you need to do is multiply the diameter by pi. Pi's decimal equivalent is 3.14159... The reason that I put the triple period was to signify that pi is a non-ruccuring, or transcendental number, which means it has infinite digits after the decimal. For general purposes though all you would need to know is that pi = 3.14 since you would not likely need to calculate anything past two decimals.
How do you find the circumference of a circle without knowing the area?
To find the circumference of a circle, you need only know the radius or diameter of the circle. The circumference of a circle is calculated as 2 x Pi x radius OR Pi x diameter. Pi is approximately 3.1415926.
How do you find the diameter of a circle in the terms of pi?
To find the diameter of a circle, you will either need to know the area or its circumference. If you know the area: diameter = 2 x squareroot(area / Pi) If you know the circumference diameter = circumference / Pi
How do you do math problems using pi?
Well, first you need to know the formula for what you are doing (usually with pi it is area or circumference).
If the diameter is 8cm how much square cm do i need?
If you need to know area of a circle then it is: pi*4^2 = 16*pi square cm or about 50 square cm
Do you need Pi?
Everyone needs Pi.
What is the real pi?
pi is 3.14159265...............that is all i know
What is the whole number for pi?
pie is a never ending number it always goes on, but usually all you need to know is 3.141, but i know it to 3.141592654 :)
How do you find circumference of concentric circles?
You need to know diameter of each circle, which are different for each circle; each circle circumference is pi x diameter where pi = 3.14159
Can the cumference of a circle be found?
Yes. you need to know the diameter or radius of the circle and then the formula is:- Circumference = Pi*Diameter or Circumference = 2Pi*Radius. An approximate value for Pi is 3.14159.
How do you calculate the area of a circle when you have the diameter?
All you need to do is multiply the diameter by pi. Pi's decimal equivalent is 3.14159... The reason that I put the triple period was to signify that pi is a non-ruccuring, or transcendental number, which means it has infinite digits after the decimal. For general purposes though all you would need to know is that pi = 3.14 since you would not likely need to calculate anything past two decimals.
How do you find the circumference of a circle without knowing the area?
To find the circumference of a circle, you need only know the radius or diameter of the circle. The circumference of a circle is calculated as 2 x Pi x radius OR Pi x diameter. Pi is approximately 3.1415926.
How far do you know pi?
3.14159 this is how far i know it.
Find the circumference of a circle?
If you know the diameter, multiply it by pi. If you know the radius, multiply it by 2xpi. Pi is approximately 3.1416.
