Firstly the word is pi. It is a Greek letter.
In mathematics it is often useful to use letters to represent something unknown. We often use the letter x or the letter n to do so.
In certain special cases we keep a letter and that represents something so we all know what we are referring to.
In this case, pi.
Pi refers to the ratio of the diameter of a circle to its circumference. It is always the same. No matter what size the circle the diameter will always be a certain size compared to the circumference.
It is often useful to keep and use such letters and phrases. It is a kind of shorthand for people that use mathematics.
It is a sector of the circle
It's a Pie graph or Pie Chart are two other common names for a circle graph.
A pie chart?
pie r2
4.
It is a sector of the circle
Yes, a circle graph and a pie chart are the same thing
Pie is a symbol that represents a number (3.14159...). Pie algebra is when the number Pie is used in algebra like the ccircumference of a circle. A circumference of a circle is worked out by Pie algebra: DxPie (diameter x Pie). Its a bit complicated to explain but...
The area of a circle, in terms of pie, with a diameter of 36 is: about 324pi
It's a Pie graph or Pie Chart are two other common names for a circle graph.
In order to find the diameter of a circle if you have the area is to rearrange the formula for the area of a circle to put diameter as the unknown, like so: PIE*d = Area of a Circle d = (Area of a Circle) / PIE Therefore if the area of your circle is 40cm, 40/PIE = 12.73cm and that's the diameter.
Circle graphs are also called pie graphs or pie charts because of the obvious round shape. Circle graphs show percentages by the percent-matching division in the circle. The division of this chart is similar to the cutting of a pie, again, going back to the factor of a pie chart/graph.
A pie chart?
pie r2
yes because pie charts are out of 360 degrees and circle graphs are out of 100%
An easy way to draw a pie is by first drawing a circle. Next, use lines to divide the circle into slices.
Pie r2 is the formula needed to find out the area of a circle you have to square the radius of the circle (half the diameter of the circle) two times (btw square means times the number by it self) and times the answer by pie which is 3.14