No I searched Wikipedia, the Meet The Author studio is what would be called Studio K the one you posted above is Studio L according to the list of studios
The issue is there are no real dimensions for such studios as they don't have walls - you can try and guess by using the dimensions between the pillars, but given the sets circular nature they are likely to extend outside the pillars.
I suppose, I asked for a mock studio which could house the business bulletins but could also be used for MTA and TB and if the NC had to move to Studio D for any reason, London could broadcast from it. I just wanted to make sure it fit