Question

geometria analitica
Calcule a distância entre os pontos A(4,2) e B(6,8): ​

Answer 1

$D_{ab} = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}\\ D_{ab} = \sqrt{(6 - 4)^2 + (8 - 2)^2}\\ D_{ab} = \sqrt{2^2 + 6^2}\\ D_{ab} = \sqrt{4 + 36}\\ D_{ab} = \sqrt{40}\\ D_{ab} = 2\sqrt{10}$