Cho hình chóp S.ABCD có đáy là hình vuông cạnh a, SA vuông góc với đáy, SB tạo với mặt phẳng chứa đáy góc 450. Thể tích khối chóp S.ABCD là             

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

•  Choose the best answer for the following sentence:

  _____________ was the effective way to help people in remote and mountainous
  areas to read and write?
   

• Choose a word that has different stress pattern:

  industrial                approximately             enormously            population

• Choose a word that has different stress pattern:

  separated              contraception               annually              gradually

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

  contained            attracted                succeeded              implemented

• Choose a word that has different stress pattern:

  fluctuate             unhealthy              industry              immigrant

• Choose a word that has different stress pattern:

  shortage            marriage               concrete              include

• Choose a word that has different stress pattern:

  envelope            pagoda           repentance           reunion

• Choose a word that has different stress pattern:

  gather            village              member              believe

• Choose a word that has different stress pattern:

  encouragement              resolution                preparation                entertainment

• Choose a word that has different stress pattern:

  computer                popular                  million              special