the 2010 model is the exact same size as 2011 model --415x585 , the awning is wider than your tent so it can be clipped onto the poles
Total length is about 8.6 metres, width 4.2m there is about 30% overlap in terms of floor space from the awning.
The awning begins at the third guy from the left hand side (the rest is just a rain cap) however here is a picture that shows the outline of the tent inside the awning in order for you to judge for yourself. I'd say that the awning gives you about 70% again in usable space (excluding the bedroom pods of course)