## What are the first 25 decimals of pi?

3.1415926535 8979323846 2643383279 5028841971 6939937510 5820974944 5923078164 0628620899 8628034825 3421170679 …

## How many decimals of pi are needed?

Now let me ask a different question: How many digits of pi would we need to calculate the circumference of a circle with a radius of 46 billion light years to an accuracy equal to the diameter of a hydrogen atom (the simplest atom)? The answer is that you would need 39 or 40 decimal places.

**How accurate is pi?**

Pi is irrational. That is, the decimal expansion never ends and never repeats, so any number of decimal places we write out is an approximation. The approximation 3.14 is about ½ percent off from the true value, and the fairly well known 3.14159 is within 0.000084 percent.

### What is pi to the 30 decimal places?

The Welsh-born mathematician William Jones (1675–1749) selected the Greek symbol (p) for pi. Rounded to 30 digits past the decimal point, it equals 3.1415926535 89793238462643383279.

### Can pi be calculated?

Pi is the ratio of a circle’s circumference to its diameter. In theory, if you can draw and measure a perfect circle, you can calculate pi by simply dividing one value by the other.

**Why is rounding off pi acceptable?**

The circumference is the distance around the circle. When the circumference is divided by the diameter, the result can go beyond 100,000 decimal points, so to make calculations easier, pi is rounded to 3.14, or shown as the symbol π.

#### What does it mean when PI is 25 decimal places?

In other words, Pi is an infinite decimal and an irrational number. Furthermore, we define 25 decimal places as 25 digits after the decimal point. Therefore, we take “Pi to 25 decimal places” to mean that you want to see “3.”

#### Can you convert a decimal to an inch fraction?

As a result, converting a decimal to an inch fraction is not as simple as finding the nearest fraction. Instead, it is necessary to find the nearest fraction with the denominator that is a power of 2.

**How many Picas are there in 1 inch?**

Figures rounded to a maximum of 5 decimal places (7 with smaller numbers). How many picas are there in 1 inch? There are 6 picas in 1 inch. To convert from inches to picas, multiply your figure by 6 (or divide by 0.16666666666667) . Figures rounded to a maximum of 5 decimal places (7 with smaller numbers).

## How to find the nearest fraction of inches?

Instead, it is necessary to find the nearest fraction with the denominator that is a power of 2, also known as a dyadic fraction or dyadic rational number. [1] Typical inch fractions will look something like 1/64, 1/32, 1/16, 1/8, 1/4, or 1/2. Use our feet and inches calculator to add or subtract feet and inch fractions.