Hello everyone, my name is Dinh Tan Quoc. This year I am 13 years old, I live in My Duc, Hanoi. There are four members in my family, including my parents, elder brother and me. Now, I am studying in class 7B at My Thanh school. At school I have a lot of friends, they are all docile and lovely. Everyone says that I am a very active and energe child so they love me so much. My favorite subject is Physics and English. My hobbies are cooking and reading books. Some of the favorite books are science fiction, detective, history and art. In my spare time, I also take an online piano course. In the future, I will try to get more experience to pursue the dream of becoming a famous pianist performing in the world.
tính diện tích xung quanh và diên tích toan phan hinh hop chu nhat a chieu dai 25dm chieu rông 1.5m chieu cao 18dm b chieudai 4,5m chieu rong 1,3 chieu cao1,4