Bài 2. Viết số thích hợp vào chỗ chấm : a) Một hình tròn có chu vi 16,328cm. Đường kính của hình tròn đó là …………………… cm.​ b) Một hình tròn có chu vi 254,24dm. Bán kính của hình tròn đó là …………………… dm.

Các câu hỏi liên quan

EXERCISE 2: Add tag questions to the following 1. Your name is Thanh , ……………………………….. ? 2. Today is Sunday , ……………………………….. ? 3. John doesn’t agree with me about the plan , ……………………………….. ? 4. There’s a bus coming , ……………………………….. ? 5. Everybody was saying their prayers in the church when I cane in, ……………………………….. ? 6. He makes a lot of mistakes in pronunciation , ……………………………….. ? 7. The traffic was heavy yesterday , ……………………………….. ? 8. Both men won’t surf the Internet for a chat any more , ……………………………….. ? 9. A lot of students don’t think studying grammar is interesting , ……………………………….. ? 10. We haven’t done this homework yet , ……………………………….. ? 11. Jack’s enrolled on this course , ……………………………….. ? 12. Helen’s got fashionable clothes to wear on this important occasion , ……………………………? 13. The Smiths have got a computer , a CD player and two motorbikes , …………………………… ? 14. The children have many computer games to play , ……………………………….. ? 15. Your brother has the chance to speak English outside the classroom , ………………………… ? 16. David and Kate aren’t going to pay their school fees tomorrow , ……………………………….. ? 17. There weren’t any well- qualified teachers at this school , ……………………………….. ? 18. This boy could use a computer at the age of 5 , ……………………………….. ? 19. MY father put an advertisement in the Times to sell his house , ……………………………….. ? 20. It is expensive for you to access the Internet , ……………………………….. ? 21. Jim really shouldn’t spend most of his time wandering on the Internet , ………………………… ? 22. People don’t know which website is useful to them , ……………………………….. ? 23. Students have to wear uniforms in Vietnam , ……………………………….. ? 24. Email is good way for people to communicate , ……………………………….. ? 25. The garbage can be taken out everyday , ……………………………….. ? 26. We must send this message by email , ……………………………….. ? 27. You wouldn’t like another drink , ……………………………….. ? 28. Vinh would rather listen to English programs on the radio , ……………………………….. ? 29. You had better not go out in the cold weather , ……………………………….. ? 30. Ba ought to join her family on a day trip to her hometown , ……………………………….. ? 31. My sister might like writing email , ……………………………….. ? 32. You should attend the opening ceremony , ……………………………….. ? 33. You wouldn’t mind helping me with this , ……………………………….. ? 34. I needn’t say anything to you about it , ……………………………….. ? 35. Your aunt needs to grow rice on his farm , ……………………………….. ? 36. This is Mr. Johnson , ……………………………….. ? 37. That was Ann on the phone , ……………………………….. ? 38. Those weren’t your parents over there , ……………………………….. ? 39. These are your cases here , ……………………………….. ? 40. The Chinese invented paper in AD 105 , ……………………………….. ?