I'm doing a project and it's supposed to be on an A4x2 sized poster, how big is that? Please answer.?

Question

I'm supposed to do a project on an A4x2 sized poster, is A4x2 just normal A4 or is it 2 A4 pieces of paper put together, but then that would be A3, if it were you what type of paper would you buy, A4 or A3? Please answer me. Thanks.

Answer 1

It can be A3.
It can also be two A4 sheets with the narrow sides together.
A2 cut in two in such a way it does not become A3
594 x 210.

I would experiment with two sheets of A4, and ask my teacher, or other students if the teacher is not available, before buying paper for the real poster.