Question

Qual a distancia entre pontos A(3,9) e c(-7,0)?

Answer 1

$a(3,9) ; c(-7,0)\\\\\\ D_{a,c} = \sqrt{(x_c-x_a)^2+(y_c-y_a)^2} \to \\\\\\ D_{a,c} = \sqrt{(-7-3)^2+(0-9)^2} \to \\\\ D_{a,c} = \sqrt{(-10)^2+(-9)^2} \to \\\\ D_{a,c} = \sqrt{100+81} \to \\\\ D_{a,c} = \sqrt{181} \to \\\\ D_{a,c} = \sqrt{181}$