Question

Calcule a distância entre os pontos A ( 1 , 3 ) e B ( 13 , 8 ).

D αβ = ( X b - X a ) ² + ( Y b - Y α ) ²

Answer 1

$d(ab) = \sqrt{(xb - xa) {}^{2} } + (yb - ya) {}^{2}$
$d(ab) = \sqrt{(13 - 1) {}^{2} } + (8 - 3) {}^{2}$
$d(ab) = \sqrt{ {12}^{2} } + 5 {}^{2}$
$d(ab) = \sqrt{144 + 25}$
$d(ab) = \sqrt{169}$
$d(ab) = 13$