Respostas

2014-03-17T18:09:29-03:00
Dab=raiz quadra de (xb-xa)^2 + (yb-ya)^2
dab= ((-2)-4)^2 + ((-1) -2)^2
dab=36+9
dab=raiz de 45
dab=6,7
1 5 1