Cho hình chóp A.ABC có đáy ABC là tam giác vuông tại B và BA=BC=a. Cạnh bên SA=2a vuông góc với mặt phẳng đáy. Tính theo a thể tích V của khối chóp S.ABC.        

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

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

  pond                off               follow             money

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

  eight              weight               height                  freight

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

  The teenager should have phoned his parents earlier.
   

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

  What a pity you failed the final exam!
  
  

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

  The football coach lost his temper because the best player on the team missed the match.
  
  

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

  Whatever subjects you choose makes no difference to me.
   

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

  People have plenty of leisure time.

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

  pursuit               suitable             recruit                building

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

  resign              research              resemble               resist

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

  chimney             child             line            sign