题目

Now QQ coins are popular among Chinese teenagers. People use real money to buy Web money. Then they buy clothes for their online characters (人物形象) or services for their online pets with it. And these fancy things will cost QQ fans more in the future.The government will put a tax (税) of 3% on online sales. For example, if QQ users pay 100 yuan for 110 QQ coins, they will have to spend 103 yuan in the future. The extra (额外的) three yuan is tax.Beijing was the first city to carry out the policy. Online games have to pay the tax, too. A number of players make money by spending a lot10．计算下面图形的周长和面积．