Given: Equation of plane is

Formula Used: Equation of a plane is where is the unit vector normal to the plane, represents a point on the plane and is the distance of the plane from the origin.

Explanation:

Given equation is … (1)

Now,

= 13

Dividing (1) by 13 and multiplying by -1,

which is of the form

Therefore, length of perpendicular from origin to plane is 3 units.