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Describe the 3-Space Graph of the Equation X2 + Z2

Question 50

Multiple Choice

Describe the 3-space graph of the equation x2 + z2 = 4.


A) a circle of radius 2 in the xz-plane having centre at the origin
B) a circular cylinder of radius 2 with central axis along the y-axis
C) a sphere of radius 2 having centre at the origin
D) a disk of radius 2 in the xz-plane having centre at the origin.
E) a circular cylinder of radius 4 with central axis along the x-axis

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