Find an equation of the sphere that passes through the point 
and has center 
Definitions:
Post Office
A public service or establishment responsible for the collection, sorting, transporting, and delivery of mail to recipients.
Explanandum
This is the phenomenon or event that needs to be explained in scientific or philosophical inquiry.
Explanation
The act of making something clear or understandable by describing the relevant facts or ideas.
Sweater
A knitted garment typically with long sleeves, worn over the upper body.
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