Q:
# Is pi a real number?

**Pi is a real number, as all numbers that exist on a number line are real.** Real numbers include all rational and irrational numbers; pi is defined as an irrational number.

Credit:
J Gabas Esteban
CC-BY 2.0

There are several categories that refer to types of numbers. Numbers that aren't real numbers include imaginary and complex numbers. Imaginary numbers are all numbers that are divisible by i, or the square root of negative one.

Rational numbers are those that can be written as a simple fraction. Therefore, 0.11111... (repeating) is a rational number because it can be written as 1/9, but pi is not a rational number because there is no fraction that is equal to the number pi.

Learn more about Numbers-
Q:
## Why does pi not have units?

A: Pi does not have units because it is a number, not a measurement. However, pi is sometimes treated like a unit when referring to angle measurements because... Full Answer >Filed Under: -
Q:
## How do you add decimals?

A: To add decimals, first write down the numbers, one below the other, with the decimal points in line with each other. If the numbers have different numbers ... Full Answer >Filed Under: -
Q:
## How do you use a random number generator?

A: Use a random number generator by providing a range of numbers from which to generate one number and then initiating it to start. The generator outputs a ra... Full Answer >Filed Under: -
Q:
## What does "short word form" refer to in math?

A: In mathematics, the short word form is created by writing a large number using a combination of numbers and words. For instance, the short word form of 785... Full Answer >Filed Under: