Question

Find the distance between the points $P(3,4,-7)$ and $Q(-2,5,10)$

Answer 1

Distance between two points

$\sqrt{{(x2-x1)}^2+{(y2-y1)}^2+{(z2-z1)}^2}$

$=\sqrt{{\left(5\right)}^2+{(-1)}^2+{(-17)}^2}$

$=\sqrt{25+1+289}$

$=\sqrt{315}Ans$