Find the Center and Radius of the Sphere $x ^ { 2 } + y ^ { 2 } + z ^ { 2 } - 4 x + 4 - 8 y = 0$

question 54

Essay

Find the center and radius of the sphere. $x ^ { 2 } + y ^ { 2 } + z ^ { 2 } - 4 x + 4 - 8 y = 0$

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Definitions:

Health Care Occupations

Professionally recognized jobs within the health care sector, including doctors, nurses, therapists, and support staff.

Public Toilets

Restrooms located in public places that are available for use by the general population.

Antiretroviral Therapy (ART)

The use of combinations of antiretroviral drugs to combat HIV.

Combinations

Combinations refer to the act of combining two or more elements to create something new or to achieve a particular effect.