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

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

A.1
B.3
C.-1
D.#NAME?

A.\(32\pi \)
B.\(\dfrac{{32}}{3}\pi \)
C.\(\dfrac{{16}}{3}\pi \)
D.\(16\pi \)

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

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

A.\({a^5}\)
B.\({a^{\frac{2}{5}}}\)
C.\({a^2}\)
D.\({a^{\frac{5}{2}}}\)

A.\(55\pi c{m^2}\)
B.\(80\pi c{m^2}\)
C.\(70\pi c{m^2}\)
D.\(110\pi c{m^2}\)

A.1
B.2
C.0
D.3

A.2
B.1
C.0
D.3