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Mathematics 16 Online
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).

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?

OpenStudy (whpalmer4):

that's right. and how would you bolt on a third dimension (z), do you think?

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