A.\(6\pi \)
B.\(12\pi \)
C.\(15\pi \)
D.\(33\pi \)

A.\(3x - y - 2z - 1 = 0\)
B.\(x - 2y + 2z + 1 = 0\)
C.\(3x - y - 2z + 1 = 0\)
D.\(x - 2y + 2z - 1 = 0\)

A.\(Bh\)
B.\(\dfrac{1}{3}Bh\)
C.\(\dfrac{1}{6}Bh\)
D.\(\dfrac{1}{2}Bh\)

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

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

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

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

A.\(4\)
B.\(5\)
C.\(2\)
D.\(1\)

A.\(18\)
B.\(1\)
C.\(2\)
D.\(3\)

A.\(55\pi \)
B.\(100\pi \)
C.\(75\pi \)
D.\(50\pi \)