I am reading a paper and the dimensions for some electrodes are given, but I was wondering if I was reading it properly:

30 × 15 mm2, is this the same as: (30 × 15)mm2 ?

To track the published paper I provide below its Digital Object Identifier (DOI) commonly used in online research papers. This number should lead you directly to the paper.

DOI: 10.1002/aesr.202000093

• those measurements actually make no sense Aug 2 at 21:55
• "Both electrodes were cut in dimensions of 30x15mm2." This is word by word what is stated on the article.
– RSM
Aug 2 at 21:57
• 30×15 mm2 may be 30 something long with 15 mm2 cross section .... (30×15) mm2 could just mean 450 mm2 cross section, no stated length Aug 2 at 22:26
• Yeah, I am not sure how to interpret it either. As you said, it could be interpreted in those two ways. Due to the lack of units on the first number I guessed it meant (30x15)mm2.
– RSM
Aug 2 at 22:43
• Are we all supposed to know what a "DOI" is? (I don't.) There's a hyperlink button on the editor toolbar or you can use the syntax [Link text](http://url.com). Aug 2 at 22:46