Question

CALCULE A DISTANCIA ENTRE OS PONTOS (2,3) E (-1,-1)

Answer 1

A = (X, Y) = (2,3)
B = (Xo, Yo) = (-1,-1)

$D = \sqrt{ (x- x_{0})^{2} + (y- y_{0})^{2}}$
$D = \sqrt{ (2- (-1))^{2} + (3- (-1))^{2}}$
$D = \sqrt{ (3)^{2} + (4)^{2}}$
$D = \sqrt{ 9 + 16} = \sqrt{ 25}$
$D = 5$