A.\(24\pi \) .
B.\(192\pi \).
C.\(48\pi \).
D.\(64\pi \).

A.\(5\).
B.\(9\).
C.\(6\).
D.\(\dfrac{3}{2}\).

A.\(5 + i\).
B.\( - 5 + i\).
C.\(5 - i\).
D.\( - 5 - i\).

A.\(8\).
B.\(9\).
C.\(6\).
D.\(\dfrac{3}{2}\).

A.\(\dfrac{x}{3} + \dfrac{y}{{ - 1}} + \dfrac{z}{2} = 1\).
B.\(\dfrac{x}{3} + \dfrac{y}{1} + \dfrac{z}{{ - 2}} = 1\).
C.\(\dfrac{x}{3} + \dfrac{y}{1} + \dfrac{z}{2} = 1\).
D.\(\dfrac{x}{{ - 3}} + \dfrac{y}{1} + \dfrac{z}{2} = 1\).

A.\(\overrightarrow {{u_2}} \left( {3;4; - 1} \right)\).
B.\(\overrightarrow {{u_1}} \left( {2; - 5;3} \right)\).
C.\(\overrightarrow {{u_3}} \left( {2;5;3} \right)\).
D.\(\overrightarrow {{u_4}} \left( {3;4;1} \right)\).

A.\(6\).
B.\(3\).
C.\(4\).
D.\(12\).

A.\(\left( {0;2;1} \right)\).
B.\(\left( {3;0;0} \right)\).
C.\(\left( {0;0;1} \right)\).
D.\(\left( {0;2;0} \right)\).

A.\(3\).
B.\(1\).
C.\(0\).
D.\(2\).

A.\(36\).
B.\(720\).
C.\(6\).
D.\(1\).