3.141592654 rounded by the calculator
You take the circumference of a circle and divide it by the diameter.
According to most news sources (and Wikipedia), the most accurate calculation of pi currently stands at five trillion digits (5,000,000,000,000 digits!) That's quite a lot.
The circumference of a circle when divided by its diameter is the value of pi which is an irrational number that can't be expressed as an exact fraction.
Archemedes
The area of the full circle is (pi R2) = (25 pi) square inches. The full circumference is (2 pi R) = (10 pi) inches. An arc length of 10 is [ 10/(10 pi) ] = ( 1 / pi ) of the full circle. So the area of the sector is (full area / pi) = (25 pi) / pi = 25 square inches
the Egyptians
pi is currently at 4 million digits
3.1459/it 2556998512545123113
You take the circumference of a circle and divide it by the diameter.
Pi's full name is Piscine Molitor Patel.
While there is no fraction form for pi, 22/7 is an approximation of pi that can be used for a rough calculation .
Archimedes
According to most news sources (and Wikipedia), the most accurate calculation of pi currently stands at five trillion digits (5,000,000,000,000 digits!) That's quite a lot.
The circumference of a circle when divided by its diameter is the value of pi which is an irrational number that can't be expressed as an exact fraction.
Archimedes
Archemedes
Herman H. Harris has written: 'The history and calculation of pi' -- subject(s): Pi