A.\(36\,\,\left( {c{m^2}} \right)\)
B.\(18\pi \,\,\left( {c{m^2}} \right)\)
C.\(6\pi \,\,\left( {c{m^2}} \right)\)
D.\(36\pi \,\,\left( {c{m^2}} \right)\)

A.\(12\)
B.\(4\)
C.\(\dfrac{4}{3}\)
D.\( - \dfrac{4}{3}\)

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

A.\(A_{10}^2\)
B.\(C_{10}^2\)
C.\(A_{10}^8\)
D.\({10^2}\)

A.\(\left( {2;3;3} \right)\)
B.\(\left( { - 2; - 3;3} \right)\)
C.\(\left( {4;5;3} \right)\)
D.\(\left( {2; - 3; - 3} \right)\)

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

A.\(x =  - 1\)
B.\(x = 2\)
C.\(y =  - 1\)
D.\(y = 2\)

A.\(8\)
B.\(12\)
C.\( - 8\)
D.\( - 12\)

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

A.\(m =  - 1\)
B.\(m = 1\)
C.\(m =  - 7\)
D.\(m = 5\)