A.\(\dfrac{{{a^3}\sqrt 3 }}{3}\)
B.\(\dfrac{{{a^3}\sqrt 3 }}{4}\)
C.\(\dfrac{{{a^3}\sqrt 3 }}{2}\)
D.\(6{a^3}\)

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

A.\(1\)
B.\(4\)
C.\(0\)
D.\(2\)

A.\(V = \pi rh\)
B.\(V = \pi {r^2}h\)
C.\(V = \dfrac{1}{3}\pi rh\)
D.\(V = \dfrac{1}{3}\pi {r^2}h\)

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

A.\(10\)
B.\(12\)
C.\(30\)
D.\(15\)

A.\({x^3}\)
B.\({x^{\frac{7}{2}}}\)
C.\({x^{\dfrac{2}{3}}}\)
D.\({x^{\frac{3}{5}}}\)

A.
B.
C.
D.

A.\( - 1\)
B.\(0\)
C.\(1\)
D.\(4\)

A.\(y =  - {x^3} + 3{x^2} - 3x + 1\)
B.\(y =  - {x^2} + 2x\)
C.\(y = {x^4} - {x^2} + 1\)
D.\(y = \dfrac{{x - 1}}{x}\)