A.\(9\pi \sqrt 3 \)  
B.\(27\pi \sqrt 3 \)  
C.\(3\pi \sqrt 3 \)  
D.\(6\pi \sqrt 3 \)

A.\(3\)
B.\(0\)  
C.\(1\)  
D.\(2\)

A.\(\left( { - 2;0} \right)\)
B.\(\left( { - \infty ; - 1} \right)\)  
C.\(\left( { - 2; + \infty } \right)\)
D.\(\left( { - 1;1} \right)\)

A.\( - 2019\)
B.\( - 1968\)  
C.\( - 1966\)
D.\( - 1993\)

A.\(11\)
B.\(9\)  
C.\(10\)
D.\(8\)

A.\(\dfrac{5}{2}\)
B.\(\dfrac{{10}}{3}\)
C.\(\dfrac{5}{3}\)
D.\(\dfrac{{15}}{4}\)

A.\(10\)
B.\({e^2}\)
C.\(2021\)
D.\(\ln 2\)

A.\(6\)
B.\(5\)  
C.\(4\)
D.\(3\)

A.\(2014\)
B.\(2019\)
C.\(2010\)
D.\(2008\)

A.\(2012\)
B.\(2007\)
C.\(2008\)
D.\(2010\)