Are these 20" wheels?

Question

http://www.webcarnews.com/ressources/deuxroues_articles_dir/deuxroues_article_id288/main.jpg

and are these motorbike wheels or bike wheels?

http://blog.environnemental.info/wp-content/uploads/2007/08/swatch%20beachvolley%20juin2007_4.JPG

Answer 1

definitely bike wheels, and if you're talking about the just the inside rim, definitely NOT 20 inches. the whole thing, including the tire? maybe. you can't really tell the size by a picture.