Bài tập 6 trang 28 SGK Hình học 12

A. \(\dfrac{{2\sqrt 3 {a^2}}}{3}\)   

B. \(2\sqrt 3 {a^2}\)  

C. \(\sqrt 3 {a^2}\)       

D. \(\dfrac{{2\sqrt 3 {a^2}}}{9}\)  

A. 2           

B. \(\dfrac{1}{3}\)  

C. \(\dfrac{1}{2}\)           

D. \(\dfrac{1}{6}\)  

\(A.\,\,V = 3\)             

\(B.\,\,V = 2\)  

\(C.\,\,V = 4\)             

\(D.\,\,V = 8\)   

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

\(B.\,\,\dfrac{{{a^3}\sqrt 2 }}{4}\)  

\(C.\,\,\dfrac{{{a^3}\sqrt 2 }}{8}\)     

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

 \(A.\,\,{a^3}\)            

\(B.\,\,2{a^3}\)  

 \(C.\,\,\,6{a^3}\)        

\(D.\,\,\,8{a^3}\)  

\(A.\,\,V = S.a\)          

\(B.\,\,V = {S^2}a\)  

\(C.\,\,V = \dfrac{1}{3}Sa\)         

\(D.\,\,V = \dfrac{{{S^2}}}{a}\)  

\(A.\,\,V = \dfrac{{7{a^3}}}{2}\)   

\(B.\,\,V = 14{a^3}\)  

\(C.\,\,V = \dfrac{{28{a^3}}}{3}\)  

\(D.\,\,V = 7{a^3}\)  

A. \(\dfrac{{3{h^3}}}{2}\)     

B. \(\dfrac{{{h^3}}}{3}\)   

C.\(\dfrac{{2{h^3}}}{3}\)      

D. \(\dfrac{{{h^3}\sqrt 3 }}{3}\)  

A. 24                   

B. 12

C. 30                    

D. 60

A. \(\left\{ {3;3} \right\}\)      

B. \(\left\{ {4;3} \right\}\)  

C. \(\left\{ {5;3} \right\}\)      

D. \(\left\{ {4;4} \right\}\)