What are the even multiples of pi?

Answer 1

The even multiples of pi are numbers that can be expressed as 2nπ, where n is an integer. This means that the even multiples of pi are any number that is a multiple of pi and also an even number. Examples of even multiples of pi include 0, 2π, 4π, -2π, -4π, etc.

Answer 2

They are members of the infinite set of numbers of the form (2*pi)*k where k is an integer. Since the set is infinite, it is not possible to list them. Provided k is non-zero, these are all irrational (transcendental) numbers.