Question

What is the distance between `(-12,1,3)` and `(-6,2,1)`?

Answer 1

The distance is `=sqrt41=6.4`

Explanation:

The distance between 2 points `(x_1,y_1, z_1)`and `(x_2,y_2,z_2)`, is

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

So,

`d=sqrt((-6+12)^2+(2-1)^2+(1-3)^2)`

`=sqrt(36+1+4)`

`=sqrt(41)=6.4`