Do chu vi ống trụ là 4cm nên khi trải phẳng ống trụ, ta được 1 hình chữ nhật có kích thước: 4x12 (cm)

Sợi dây duỗi thẳng trở thành 4 đường chéo của 4 hình chữ nhật có kích thước : 3x4 (cm)

Áp dụng định lí Py-ta-go, ta có chiều dài mỗi đường chéo là: \(\sqrt{ }\)3²+4²= 5 (cm)

Do mỗi đường chéo có kích thước bằn nhau nên tổng chiều dài sợi dây là:

                                             5x4=20 (cm)

Ừm, theo mình làm là thế, bài này mình cũng đọc qua rồi

Theo bài tớ có số đó là :

Dai   : l---------l----------l----------l

Rong: l---------l

Chiều rộng của tấm bia là :

99 : 3 x 1 = 33 ( cm )

Diện tích của tấm bia là :

99 x 33 = 3267 ( cm2 )

Đáp số : 3267 cm2

Chu vi 8 phần

=> Nửa chu vi : 4 phần

Mà, đề cho: rộng : 1 phần

=> dài: 3 phần

Chiều rộng của tấm bìa:

99:3 x 1= 33 (cm)

Diện tích:

99 x 33=3267 (cm²)

Chiều dài   : l-----l-----l-----

Chiều rộng : l-----l

Chiều rộng của tấm bia là:

     99 : 3 x 1 = 33 ( cm )

Diện tích của tấm bia là:

      99 x 33 = 3267 ( cm² )

          Đáp số: 3267 cm²

Christmas
Two popolar traditions at Chirstmas are: decorating the home and singing the Christmas carols. The home is the center of the Christmas celebration. Inside, an evergreen tree is usually placed in the corner of the Living room. Children and their parents wrap string of colorful lights around the tree, they hang ornaments on the branches. A star or angle often crowns the top. Careful-wrapped gifts are placed beneath. Outside, families often string lights around the windows and wind light around tress and shrubs in the front yard. As the families decorate their homes, they often put on Christmas record. Almost every family has at least one favorite album or compact disc. School children of all ages perform Christmas tree to sing traditional songs Such as Jingle bells and Silent night and the give presents to each other.
1. What are the popular traditions at the chrismas?
=> They are decorating the home and singing the Christmas carols.
2. Where is the evergreen put?
=> In the corner of the Living room
3. How do they decorate the Christmas tree?
=> They wrap string of colorful lights around the tree, they hang ornaments on the branches. A star or angle often crowns the top
4. What do the family members often do on Christmas' Eve?
=> School children of all ages perform Christmas tree to sing traditional songs Such as Jingle bells and Silent night and the give presents to each other.
5. What do they do as they decorate their home?

they often put on Christmas record

#Yumi

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à á ầ ấ                uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

1. What's the right ___ to say this world in English ?

A. way B. method C. manner D. approach

2. There were many people lying ___ the sun on the beach.

A. under B. on C. in D. below

3. My parents can't ______ seeing me at home all day.

A. stop B. stand C. start D. hate

4. What will happen to his ____ ?

A. horse racing B. horse race C. racing horse D. race horse

5. A rod of wood or steel which is used with a line for catching fish is called a ____

A. fishing rod B. fish rod C. rod fish D. rod fishing

6. The exhibition ____ place twice a year.

A. makes B. has C. does D. takes

1. What's the right ___ to say this world in English ?

A. way B. method C. manner D. approach

2. There were many people lying ___ the sun on the beach.

A. under B. on C. in D. below

3. My parents can't ______ seeing me at home all day.

A. stop B. stand C. start D. hate

4. What will happen to his ____ ?

A. horse racing B. horse race C. racing horse D. race horse

5. A rod of wood or steel which is used with a line for catching fish is called a ____

A. fishing rod B. fish rod C. rod fish D. rod fishing

6. The exhibition ____ place twice a year.

A. makes B. has C. does D. takes

@Tử Đằng

@Linh Diệu

@Nguyễn Thị Nguyệt

EXERCISES: HAVE/HAS GOT

A. Write sentences with the correct form of “have got”

1. Jake/two brothers. ---Jack has got two brother

2. I/not/any climbing boots

=> I haven't got any climbing boots.

3. Lily/curly hair?

=> Has Lily got curly hair ?

4. you/a new phone?

=> Have you got a new phone ?

5. Rod and Helen/not/children.

=> Rod and Helen haven't got children.

6. Our house/two bathrooms.

=> Our house has got two bathrooms.

B. Complete the sentences with “be” or “have/has got”

1. I often haven't got a lot of meetings at the weekend.

2. Jane has got a bad headache so she should stay at home and rest.

3. Her eyebrows are black and thick.

4. There haven't got any red hats on the table.

5. The tribesman is a string of seashells around his neck.

32/3 nha ban