Answer :

Given :


Equation of plane : 2x – 3y + 6z + 21 = 0


To Find :


Length of perpendicular drawn from origin to the plane = d


Formulae :


1) Distance of the plane from the origin :


Distance of the plane from the origin is given by,



Answer :


For the given equation of plane


2x – 3y + 6z = -21


Direction ratios of normal vector are (2, -3, 6)


Therefore, equation of normal vector is






= 7


From given equation of plane,


p = -21


Now, distance of the plane from the origin is




d = 3 units


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