A.\(24\sqrt 3 {a^3}\)
B.\(16\sqrt 3 {a^3}\)
C.\(4\sqrt 3 {a^3}\)
D.\(48\sqrt 3 {a^3}\)

A.\(T = {\log _3}2\)
B.\(T = 5\)
C.\(T = {\log _2}6\)
D.\(T = 1\)

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

A.\(12{t^2} - 35t + 18 < 0\)
B.\(12{t^2} - 35t + 8 > 0\)
C.\(18{t^2} - 35t + 12 < 0\)
D.\(18{t^2} - 35t + 12 > 0\)

A.\(8\pi {a^2}\)
B.\(4\pi {a^2}\)
C.\(2\pi {a^2}\)
D.\(\dfrac{{2\pi {a^2}}}{3}\)

A.\({30^0}\)
B.\({90^0}\)
C.\({60^0}\)
D.\({45^0}\)

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

A.\(48\pi \)
B.\(24\pi \sqrt 2 \)
C.\(36\pi \)
D.\(80\pi \)

A.\(\dfrac{9}{4}\)
B.\({\log _3}\dfrac{3}{2}\)
C.\({\log _2}\dfrac{2}{3}\)
D.\(\dfrac{4}{9}\)

A.\(m \in \left( { - \dfrac{3}{4};0} \right)\)
B.\(m \in \left( { - \dfrac{3}{4}; + \infty } \right)\)
C.\(m \in \left( {0; + \infty } \right)\)
D.\(m \in \left( { - \infty ;0} \right)\)