Find equations in Cartesian, cylindrical, and spherical coordinates for the following surfaces: (a) A sphere of radius 2

Question

Find equations in Cartesian, cylindrical, and spherical coordinates for the following surfaces:
(a) A sphere of radius 2 centered at x = 2, y = 0, z = 0.
(b) A cylinder of radius 3.
(c) A cone represented by the Cartesian equation x² + y² - z² = 0.

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