Asked by Anonymous

Find the perpendicular distance from the plane r.(2i-14j+5k)=10 to the origin.

Please help...I have no idea what to do!
Answered by Reiny
if Ax + By + Cz + C = 0 is the general equation of a plane, then the distance from the origin (0,0,0) to that plane is

ā”‚Cā”‚/āˆš(A^2 + B^2 + C^2)

Can you take it from there?
Answered by jj
2/3
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