Answer:
[tex]|WX|=2\sqrt{10}[/tex]
Step-by-step explanation:
To find the distance between two points in there dimensional coordinate system, we use the formula;
[tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2+(z_2-z_1)^2}[/tex]
The magnitude for w(6 ,-3 , 6) and x(6, 3, 4)
[tex]|WX|=\sqrt{(6-6)^2+(3--3)^2+(4-6)^2}[/tex]
[tex]|WX|=\sqrt{(0)^2+(6)^2+(-2)^2}[/tex]
[tex]|WX|=\sqrt{0+36+4}[/tex]
[tex]|WX|=\sqrt{40}[/tex]
[tex]|WX|=2\sqrt{10}[/tex]
The correct choice is A.
