Một khu vườn hình chữ nhật có chiều dài hơn chiều rộng 15 m .Nếu người ta bớt chiều dài đi 2/3 chiều dài và bớt chiều rộng đi 5/9 chiều rộng thì khu vườn này trở thành hình vuông .Tính diện tích khu vườn HCN ban đầu .

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III, Read the passage, then answer the questions below (2pts) Living in the country is something that people from the city often dream about. However, in reality, it has both advantages and disadvantages.There are certainly many advantages to living in the country. First, you can enjoy peace and quietness. Moreover, people tend to be friendlier. A further advantage is that there is less traffic, so it is safer for young children. However, there are certain disadvantages or drawbacks to life outside the city. First, because there are fewer people, you are likely to have few friends. In addition , entertainment is difficult to find, particularly in the evening. Furthermore, the fact that there are fewer shops and services means that it is hard to find jobs. In short, it can be seen that the country is more suitable for some people than others. On the whole, it is often the best for those who are retired or who have young children. In contrast, young people who have a career are better provided in the city. Questions: 1, Does living in the country have only good points ? ………………………………………………………………………………………… 2, How many advantages does living in the country have ? ………………………………………………………………………………………… 3, Is it safer or more dangerous for young chidren to live in the country ? …………………………………………………………………………………………. 4,Why is it hard for you to find jobs in the country ? ………………………………………………………………………………………...... 5,Who is living in the country the best for ? …………………………………………………………………………….......................