Question: Levelsurface visualization

To practice more in documentmode
Given  f := x^2 + y^2 + z^2 = 1  
Asked: 
surfacelevel on level 1  and surfacelevel upon wich the point (sqrt(3), 3, -2) is located.


1) x^2 + y^2 + z^2 = 1   : what solid ( a sphere with radius 1)  and  plot 
2) surfacelevel (solid sphere)   for point  (sqrt(3), 3, -2) and plot
3) Plot together 

Doing this calculation solely with contextpanel..no that's not always possible as it seems by trying to plot a sphere. 

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