Question

What is the distance between `(-3,9,1)` and `(2,-5,-6)`?

Answer 1

`sqrt 270`

Explanation:

The formula for distance in three dimensions is:

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

So, for your example: `sqrt((-6 -1)^2 + (-5-9)^2 + (2-(-3))^2)`

Which is equal to `sqrt (49+196+25)`

`= sqrt 270`

`~~ 16.43`