let's use pi
irrational times rational=irrational
pi≈3.14
so double that is
2pi≈6.28
that's beteween 5 an d7
so an irrational number between 5 and 7 is 2pi
we could also do
remember that square roots of non-perfece square numbers are usually irraitonal
5²=25
7²=49
so an irrational number could be √c where 25<c<49
example, √40
some irrational numbers are 2π nd √40
