355/113 is a better approximation.
In fact, if you assume the earth is exactly 6371 Km in radius (says Google... and a perfect sphere) using 355/113 would put your measurement of the earth off by only 3.4 METERS from the true value.
355/113 is the best simple approximation for everyday use.
the suns total volume would be off by 10% of an earth volume
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Circumference/Diameter or 3 141592653589793238..../999999999999999999....
22/7 or 223/71
I hope you mean pi.
A fraction of 360 degrees
Divide the central angle of the relevant pie segment by 360.
The concept is this one. A pie is a whole, 100%. One half of a pie is 50%. Any fraction of the pie is a percentage of the 100% pie. Thus 1/5th of a pie is 20%. Use your percentages like the wedges of the pie.
No matter what fraction one gives, there is one closer. There is no answer to this question.
It is called a pie chart because it is circular... like a pie. They are used for math, statistics, and algebra. The pie represents it being a whole.