Question

calcule A(0,0) B(3,-4) dAB

Answer 1

Olá,

$Dab = \sqrt{ (3-0)^{2} + (-4-0)^{2} }$
$Dab = \sqrt{ (3)^{2} + (-4)^{2} }$
$Dab = \sqrt{9 + 16}$
$Dab = \sqrt{25}$
$Dab = 5.$