Question

dado os pontos a (1,2) e b (5,5), ache a distancia entre a e b

Answer 1

$a~(1~;~2)~~e~~b~(5~;~5)\\\\\\ D_{ab}= \sqrt{(x_b-x_a)^2+(y_b-y_a)^2} \\\\\\ D_{ab}= \sqrt{(5-1)^2+(5-2)^2}\to\\\\ D_{ab}= \sqrt{(4)^2+(3)^2}\to\\\\ D_{ab}= \sqrt{16+9}\to\\\\ D_{ab}= \sqrt{25}\to\\\\ \large\boxed{\boxed{D_{ab}= 5}}$