The equation of the sphere is
The standard form of the equation of the sphere is :
Where A (a, b , c) is the center and r is the radius.
From the question we should first find the radius
r =
Point = (x , y , z) = (8 , 3 , -3)
Center = (a, b , c)= (5 , 6 ,5)
Substituting it in the formula
r =
By further calculation
r =
So, we get
r =
Substituting it in the standard form
Therefore, the equation of the sphere is
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