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Q: What is special about pi and what you have to use it for?

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pi is irrational.

3.14159265 That Pi? Many people use Pi. I use Pi in my math class.

the number is that you use for pi is 3.14 the number is that you use for pi is 3.14

Pi never ends. That's why it's so special.

Just divide 56 by pi. Pi is approximate 3.14; or use the "pi" key on your scientific calculator.Just divide 56 by pi. Pi is approximate 3.14; or use the "pi" key on your scientific calculator.Just divide 56 by pi. Pi is approximate 3.14; or use the "pi" key on your scientific calculator.Just divide 56 by pi. Pi is approximate 3.14; or use the "pi" key on your scientific calculator.

It is PI day

people use pi to find the circumference of a circle.

To find the diameter of a circle, you use pi to find the radius, because the middle of a circle is pi.

Circumference = Pi * D (the diameter) Therefore D = Circumference / Pi Naturally all circles have a circumference, but if this value is known then we can find the diameter by dividing this value by Pi. (Note: Pi is a special number and we can only ever use an approximation to its value.)

Pi is the number you have to use to solve many circle equations. If you want to find the area of a circle, use radius squared times pi. For the circumference, use diameter times pi.

He was responsible for instituting the use of the symbol pi.

because pi is equal to 3.1415926535... not 360

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