Question

What is the distance between #(6, 8, 2) `and`(3, 6, 2) #?

Answer 1

The distance between two points `(x_1, y_1, z_1)`, `(x_2,y_2,z_2)`
in a 3d plane is given by the formula

`d=sqrt((x_1-x_2)^2+(y_1-y_2)^2+(z_1-z_2)^2`

So just replace the values of the coordinates