Cho hình lăng trụ tam giác đều có cạnh đáylà . hợp với mặt phẳng một góc 30°. Khi đó thể tích hình lăng trụ là:           

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  I have searched ___________ for the book but I cannot find it.
   

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

  The holiday wouldn't have cost so much if they hadn't gone abroad.
  
  

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

  I would rather have an egg for breakfast.
  
  

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

  delights                     lives                       business               roles

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

  sense                        music                          discuss                  serious

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

  human                    use                     musical                    uplift

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

  pour                     mournful                         young                   your

• Choose a word that has different stress pattern:

  solemn                        express                      success                   event

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

  He now goes to work on his bicycle instead of by car.
  
  

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

  relax                        reason                           rouse                          besides