Question

What is the distance between the points R (5,7) and S (-2,3) 1: 25 2:33 3:55 or 4:65

Answer 1

$d = \sqrt{(x_{2} - x_{1})^{2} + (y_{2} - y_{1})^{2}}$
$d = \sqrt{(-2 - 5)^{2} + (3 - 7)^{2}}$
$d = \sqrt{(-7)^{2} + (-4)^{2}}$
$d = \sqrt{49 + 16}$
$d = \sqrt{65}$

The answer is 4, √(65).