Thể tích hộp đựng bóng là :197*\(\pi\) cm^3

Thể ích bên trong hộp bóng không bi chiếm là 66*\(\pi\) cm^3

Thể tích nước trong cốc tăng thêm: 4356 mm^3

a) Thể tích quả bóng bàn là 4/375*\(\pi\) (cm^3)

b) Thể tích phần nổi của quả bóng bàn là 4,19 (cm^3)

I like living in a city because it is full of energy and opportunities. There are many modern buildings, shopping centers, and entertainment places to enjoy. I can easily meet new people, learn different cultures, and find good schools or jobs. However, I also dislike some things about city life. The streets are often crowded, the air is polluted, and the cost of living is very high. Sometimes, the noise and fast pace make me feel stressed. Even though city life is exciting, I sometimes wish for the peace and fresh air of the countryside.