Cho hình lập phương  cạnh . Tính diện tích toàn phần của vật tròn xoay thu được khi quay tam giác  quanh trục .  

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

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

  He could not afford to go abroad for further study.
  
  

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

  Most of the people in the village prefer the city life.
  
  

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

  Will the last person to leave switch off the lights.
  
  

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

  No bicycle against glass please!
  
  

• Choose the word that has the underlined part pronounced differently from the rest:

  word                 world              work                for

• Choose the word that has the underlined part pronounced differently from the rest:

  birthday                firm               chirrup                   term

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

  The aim / the match / raise money / the disabled students / have good study //.
  
  

• Choose a word that has different stress pattern:

  birthday                   party                  accept                  garden  

• Choose a word that has different stress pattern:

  suggest                           prefer                          interest                     enjoy

• Choose the best answer for the following sentence:

  The first term is coming to _____________ and my school is going ___________ some days off.