Question

Find the distance of point $P(6,-6)$ from the origin.

Answer 1

Distance of point $P(6,-6)$ from origin $O(0,0)$
$=\sqrt{(6-0{)}^2+(-6-0{)}^2}=\sqrt{36+36}$
$=\sqrt{2\times 36}=6\sqrt{2}$ unit