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Pi is an irrational number, and is the circumference of the unit circle. It's a neat number to use in all sorts of circumstances.
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Why is pi 3.14 a special number?
pi is irrational.
What is the final digit in Pi?
Pi never ends. That's why it's so special.
What is the number that you use to find pi?
the number is that you use for pi is 3.14 the number is that you use for pi is 3.14
What is the formula to finding the diameter of a circle that has a circumference?
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.)
What is the diameter if the circumferance is 56 inches?
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.
What is mathematically special about March 14?
It is PI day
Why is pi day 2015 so special?
The date can be written as 3.14.15 which are the first digits of pi. That can only happen once every hundred years.
How was pi made?
Pi was not 'made'. Pi was a quantity which mathematicians discovered. By experimenting, they found that there was a very special RELATIONSHIP between the Diameter of every circle, and it's perimeter, or Circumference. They found that the Circumference is ALWAYS exactly 3.14159 times the size of the Diameter of the circles. They decided hundreds of years ago, to call this special quantity 'Pi' , which is a Greek letter. Much later, the mathematicians used a special type of mathematics, called 'calculus' to find out the very, very, precise value of 'Pi'. For most purposes , it is good enough to use the quantity 3.142 and still get a fairly accurate answer.
Why do people use Pi?
people use pi to find the circumference of a circle.
What is pi about?
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.
How you use pi in school?
To find the diameter of a circle, you use pi to find the radius, because the middle of a circle is pi.
What is the circumference of a circle with a diameter of 1 inch?
You need the formula circumference = pi x diameter pi = 3.14.. This is by the way the definition of the special number pi.
