Question

What is the distance between `(8,-7,-4)` and `(9,2,2)`?

Answer 1

`D= sqrt(118) ~= 10.86`

Explanation:

Note: The distance formula in 3D is

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

We are given ordered triplet in `x, y, z` , as follow

`(8, -7, -4) " and " (9, 2, 2)`

`D= sqrt((8-9)^2 + (-7-2)^2 +(-4-2)^2)`

`D= sqrt((-1)^2 + (-9)^2 +(-6)^2)`

`D= sqrt((1) + (81) +(36))`

`D= sqrt(118) ~= 10.86`