Respostas

2014-02-12T15:11:23-02:00
D^2= (Xb-Xa)^2 + (Yb-Ya)^2 d^2=(5-(-3))^2 + (1-2)^2 d^2=8^2 + (-1)^2 d^2=64 + 1 d^2= 65 d=/65