题目

Now, it's time for some brief news items. Teens Go Online Some 13 million European children under 18 use the Internet for schoolwork, games and music according to research done by Nielsen's “Net­rating”．The study covered Britain, Germany，France, Italy and Spain.Experts advised parents to limit the time their kids spend on line and keep them away from chat rooms. Chat to the Magic Mum British author J．K.Rowling, mother of magic boy Harry Potter, will do an Internet interview about her new book “Harry Potter and the Half­Blood Prince” on June 26. Before the event, children将一条长为20cm的铁丝剪成两段，并以每一段铁丝的长度为周长做成一个正方形．（1）要使这两个正方形的面积之和等于17cm2，那么这段铁丝剪成两段后的长度分别是多少？（2）两个正方形的面积之和可能等于12cm2吗？若能，求出两段铁丝的长度；若不能，请说明理由．