22/7
355/113 = 3.141593
Archemedes
main fraction:22/7 most accurate fraction:355/133
Pi is infinite. It can't be converted into a accurate fraction. 3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679 8214808651328230664709384460955058223172535940812848111745028410270193852110555964462294895493038196 4428810975665933446128475648233786783165271201909145648566923460348610454326648213393607260249141273 724587006606315588174881520920962829254091715364367892590360011330530548820466521384146951941511609...
22/7
355/113 = 3.141593
Yes. The larger the circle you're measuring, the more accurate that pi will be.
Archimedes
Pi, being irrational, has an endless number of digits to the right of the decimal, as you know. But for almost any application, even basic engineering, a value of 3.1417 is highly accurate.
Area = pi * radius squared A = pi * r2 Best to use the calculator value of pi to 9 places for more accurate answers.
The formula for the area of a circle is pi times the radius squared. The number pi is only used in an approximate form, since the decimal expansion of pi is infinitely long and non-repeating. Consequently, all calculations of the area of a circle are also approximate. However, you can be as accurate as you want to be. Pi has been calculated to thousands of decimal places, which is ridiculously more than you would ever need for any practical purpose. In most cases, the approximation of pi as 3.14 is close enough. Your result will be accurate, it just won't be 100% accurate.
Archimedes
Archemedes
main fraction:22/7 most accurate fraction:355/133
Pi is infinite. It can't be converted into a accurate fraction. 3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679 8214808651328230664709384460955058223172535940812848111745028410270193852110555964462294895493038196 4428810975665933446128475648233786783165271201909145648566923460348610454326648213393607260249141273 724587006606315588174881520920962829254091715364367892590360011330530548820466521384146951941511609...
Well, 3.14 isn't really accurate pi. pi is the value when circumference of the circle is divided by it's radius. It makes easier to estimate the length of circumference of the circle. Pi = 3.141592..............(infinite)