Question

What is the approximate value of pi?

Answer 1

plz refer explanation

Explanation:

the approximate value of pi (π) is 3.14159265359 or `22/7`.

Although it is generally used as `22/7` or `3.14` or `3.1416`,

the most accurate fraction equivalent to `pi` is `355/113`.

Answer 2

See explanation...

Explanation:

The Chinese mathematician Zu Chongzhi (AD 420-500) calculated approximations to `pi` using counting rods. He was able to calculate that:

`3.1415926 < pi < 3.1415927`

He identified two rational approximations to `pi`, namely:

`22/7 = 3.bar(142857)`

`355/113 ~~ 3.1415929`

Nowadays we tend to use the following approximations:

• `3` for a quick rough and ready estimation.

• `3.14` or `22/7` for calculations for simple practical use.

• `3.1415926536` or whatever accuracy your calculator gives you.

I occasionally find it useful to use `pi ~~ sqrt(10) ~~ 3.162`.