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OpenStudy (anonymous):
Please help! :) Find the equation that describes the set of all points (x,y,z) that are 3 units from the point (1, -2, 6).
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OpenStudy (amistre64):
its a 3d circle ....
OpenStudy (amistre64):
:) good luckl
OpenStudy (anonymous):
I'm not sure what equation to use for this problem. @amistre64
OpenStudy (amistre64):
you should already have been exposed to a circle equation in a plane, something about a center and a radius. can you recall how that may have looked?
OpenStudy (anonymous):
(x-a)^2 + (y-b)^2 = r^2?
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OpenStudy (whpalmer4):
that's right. and how would you bolt on a third dimension (z), do you think?
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