is 0.3 pi rational,67/79 , 75 pi,0.3 pi,13 pi

Answer 1

no, .3π is not rational

since π is irrational, any multiple of π such as
.3π is also irrational.

(I don't understand what the
67/79 , 75 pi,0.3 pi,13 pi
is supposed to be )