Bài tập 1.19 trang 19 SBT Hình học 12

\(A.\dfrac{1}{4}a.S.\sin \alpha \)     

\(B.\,\,\dfrac{1}{2}a.S.\sin \alpha \)    

\(C.\,\,\dfrac{1}{8}a.S.\sin \alpha \)   

\(D.\,\,\dfrac{1}{6}a.S.\sin \alpha \)    

\(A.\,\,V = 2{a^3}\sqrt 3 \)           

\(B.\,\,V = \dfrac{{{a^3}\sqrt 3 }}{4}\)  

\(C.\,\,V = \dfrac{{{a^3}\sqrt 3 }}{3}\)             

\(D.\,\,V = {a^3}\sqrt 3 \)  

\(A.\,\,2\sqrt 2 {a^3}\)               

\(B.\,4\sqrt 2 {a^3}\)  

\(C.\,\,6\sqrt 2 {a^3}\)               

\(D.\,\,2{a^3}\)  

\(A.\,\,V = \dfrac{{{a^3}\sqrt 3 }}{2}\)     

\(B.\,\,V = \dfrac{{{a^3}\sqrt 6 }}{3}\)  

\(C.\,\,V = \dfrac{{{a^3}\sqrt 2 }}{2}\)     

\(D.\,\,V = 2{a^3}\sqrt 6 \)  

\(A.\,\,V = \dfrac{{{a^3}}}{2}\)           

\(B.\,\,V = \dfrac{{{a^3}}}{9}\)  

\(C.\,\,V = \dfrac{{{a^3}}}{6}\)           

\(D.\,\,V = \dfrac{{{a^3}}}{{24}}\)   

\(A.\,\,V = \dfrac{{2{a^3}\sqrt 3 }}{3}\)     

\(B.\,\,V = \dfrac{{{a^3}\sqrt 3 }}{3}\)  

\(C.\,\,V = {a^3}\sqrt 3 \)           

\(D.\,\,V = 2{a^3}\sqrt 3 \)  

\(A.\,\,V = \dfrac{{{a^3}\sqrt 2 }}{2}\)         

\(B.\,\,V = \dfrac{{{a^3}\sqrt 6 }}{3}\)  

\(C.\,\,V = \dfrac{{{a^3} }}{2}\)         

\(D.\,\,V = 2{a^3}\sqrt 6 \)  

\(A.\,\,3\sqrt 2 {a^3}\)                

\(B.\,\,3{a^3}\)   

\(C.\,\,\sqrt 6 {a^3}\)                   

\(D.\,\,\sqrt 2 {a^3}\)   

\(A.\,\,V = \dfrac{1}{3}\)                      

\(B.\,\,V = \dfrac{1}{6}\)   

\(C.\,\,V = \dfrac{1}{{12}}\)                  

\(D.\,\,V = \dfrac{2}{3}\)   

\(A.V = \,\,\dfrac{{{a^3}}}{2}\)              

\(B.\,\,V = {a^3}\)  

\(C.\,\,V = \dfrac{{3{a^3}}}{2}\)             

\(D.\,\,V = \dfrac{{{a^3}}}{2}\)