image-identificationword-request
I can't find the right definition for the thing that you see on the right. If we put all parts of it together we will get a box that we can rotate (this picture is taken from a quiz for kids – they need to guess which picture they will see if they look at each cube from the top).
But what is this unfolded thing on the right called in English correctly, in a single term? I found the word "scan" but I'm not sure it is a correct one. 
Are you talking about a single piece of paper, that's not attached to a book? If so, don't use either "page" or "blank page", because a page is a sheet of paper bound inside a book. Technically, a page of paper is only one side of a sheet. If you wanted to talk about the sides of a single loose piece of paper, you'd just say the "side of the paper". Thus "page" is not used in the context of single pieces of paper.
You could use:
And because "sheet" is so specific of a word, sometimes people drop "of paper" in "sheet of paper"
I guess you could technically do the same with "piece of paper", but "piece" is too vague, so people don't usually drop "of paper".
P.S. Wikipedia tells me the technical term is a "leaf of paper", but nobody says that in daily use.
Seeing as it's medicinal in nature, I'd say it was a bottle, or more specifically, a pill bottle.
If it were a liquid medicine on the other hand, I'd refer to it as a vial.
If I were to be more generic, I'd simply refer to it as a container.
Edit: This is a container for another, similar Tesco supplement (in this case it's a multivitamin container)
The manufacturer refers to the container as a bottle.
Best Answer
The word is net.
I'm a maths teacher, and this is the standard term used in Australia. I'm fairly sure it's the same in other parts of the English-speaking world, thanks to sources like:
It's worth noting that this is not a common thing for most people to talk about, and unfortunately, "net" also has other (more common) meanings. A descriptive phrase, like your "unfolded thing", would be useful to name it when talking to people unfamiliar with the correct name.