Question

What is the distance between A (-1, 4) and B (-6, 16)?

Answer 1

$\\ \sf\longmapsto AB=\sqrt{(-1+6)^2+(4-16)^2}$

$\\ \sf\longmapsto AB=\sqrt{(5)^2+(-12)^2}$

$\\ \sf\longmapsto AB=\sqrt{25+144}$

$\\ \sf\longmapsto AB=\sqrt{169}$

$\\ \sf\longmapsto AB=13$