Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2vu/ Esercizi: http://www.khanacademy.org/exercise/geometry_1 Traduzione in Italiano del video Area and Perimeter http://www.youtube.com/watch?feature=player_embedded&v=kqqmJiJez6o http://www.khanacademy.org/video/area-and-perimeter?playlist=Geometry Help us caption & translate this video! http://amara.org/v/B2vu/