Question

Qual a distância entre os pontos A (2,5) E B (6,5) ? *

Answer 1

$d = \sqrt{(x - x_{0})^{2} + (y - y_{0})^{2} }\\d = \sqrt{(2 - 6)^{2} + (5 - 5)^{2} }\\d = \sqrt{(- 4)^{2} + (0)^{2} }\\d = \sqrt{16 }\\d = 4$