Thiết diện qua trung của một hình trụ là một hình vuông cạnh a, diện tích toàn phần của hình trụ là ?         

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose one sentence that has the same meaning as the root one:

  I used my calculator; otherwise, I’d have taken longer.
  
  

• Choose one sentence that has the same meaning as the root one:

  If I were you, I would travel to Paris by train.
  
  

• Choose one sentence that has the same meaning as the root one:

  Had he listened to me, he wouldn’t have failed the driving test.
  
  

• Choose a word that has different stress pattern:

  longevity                    occasional                    preparation                  especially

• Choose a word that has different stress pattern:

  apricot                   January                  Thanksgiving                    necessary

• Choose the best answer for the following sentence:

  ____________ saw Tom go out, did they?
   

• Choose the best answer for the following sentence:

  People believe that what they do on the first day of the year will ______________ their luck during the whole year.
   

• Choose the best answer for the following sentence:

  Only prositive comments are ______________ on the first days of the new year.

• Choose the correct sentence which is built from the words and phrases given:

  Brother / like / read / books / especial / about / natural / world
  
  

• Choose the correct sentence which is built from the words and phrases given:

  Tet / preparation / celebration / use / spread / over / month