Question

Calcule a distância A (2,1) C (-3,1)

Answer 1

$\mathsf{ d_{AB}=\sqrt{(x_B-x_A)^2+(y_B-y_A)^2}}$

$\mathsf{ d_{AB}=\sqrt{(-3-2)^2+(1-1)^2}}$

$\mathsf{ d_{AB}=\sqrt{(-5)^2+(0)^2}}$

$\mathsf{ d_{AB}=\sqrt{25+0}}$

$\mathsf{ d_{AB}=\sqrt{25}}$

$\boxed{\boxed{\mathsf{d_{AB}=5 }}}$