A.\(\dfrac{{\sqrt {226} }}{2}\)
B.\(\dfrac{{\sqrt {178} }}{2}\)
C.\(\dfrac{{5\sqrt {10} }}{2}\)
D.\(\dfrac{{\sqrt {122} }}{5}\)

A.\(2\sqrt 3 \)
B.\(3\sqrt 3 \)
C.\(3\)
D.\(6\)

A.\(2026\)
B.\(2024\)
C.\(2021\)
D.\(2029\)

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

A.\(12\)
B.\(10\)
C.\(11\)
D.\(15\)

A.\(5\)
B.\(2\)
C.\(4\)
D.\(3\)

A.\(a = 2\)
B.\(a = \dfrac{1}{{\sqrt 2 }}\)
C.\(a = \dfrac{1}{2}\)
D.\(a = \sqrt 2 \)

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

A.\(V = 12{a^3}\)
B.\(V = 2{a^3}\)
C.\(V = 4{a^3}\)
D.\(V = \dfrac{4}{3}{a^3}\)

A.\(\Delta :\,\,\left\{ \begin{array}{l}x = 1 - 4t\\y =  - 2 + 3t\\z = 2 - 2t\end{array} \right.\)
B.\(\Delta :\,\,\left\{ \begin{array}{l}x = 1 + 4t\\y =  - 2 - 3t\\z = 2 + 2t\end{array} \right.\)
C.\(\Delta :\,\,\left\{ \begin{array}{l}x =  - 4 + t\\y = 3 - 2t\\z =  - 2 + 2t\end{array} \right.\)
D.\(\Delta :\,\,\left\{ \begin{array}{l}x = 4 + t\\y =  - 3 - 2t\\z = 2 + 2t\end{array} \right.\)