Question 442618
You are given two points of the form (x1,y1) and (x2,y2).

The distance formula is {{{sqrt((x[2]-x[1])^2 + (y[2] - y[1])^2)}}}

So then our distance between PQ would be:

{{{sqrt((13-7)^2 + (11-3)^2) = sqrt(6^2 + 8^2)=sqrt(100) = 10}}}