Question

Calcular a distancia entre os pontosA (0,6) B (1,5)

Answer 1

$d_{AB}=\sqrt{(x_B-x_A)^2+(y_B-y_A)^2}\\ \\ d_{AB}=\sqrt{(1-0)^2+(5-6)^2}\\ \\ d_{AB}=\sqrt{1^2+(-1)^2}\\ \\ d_{AB}=\sqrt{1+1}= \sqrt{2}$