Find the perimeter of a triangle who's vertices are X(-6,2), Y(8,2), and Z(3,14).
A very similar type of question was answered by MathMate a while back.
Adapt his solution to your problem
http://www.jiskha.com/display.cgi?id=1313953724
Adapt his solution to your problem
http://www.jiskha.com/display.cgi?id=1313953724