you'd do the same as in the previous one, use the distance formula,
[tex]\bf ~~~~~~~~~~~~\textit{distance between 2 points}\\ \quad \\
\begin{array}{ccccccccc}
&&x_1&&y_1&&x_2&&y_2\\
% (a,b)
&&(~{{ 9}} &,&{{ 2}}~)
% (c,d)
&&(~{{ 3}} &,&{{ 10}}~)
\end{array}\qquad
% distance value
d = \sqrt{({{ x_2}}-{{ x_1}})^2 + ({{ y_2}}-{{ y_1}})^2}
\\\\\\
d=\sqrt{(3-9)^2+(10-2)^2}\implies d=\sqrt{(-6)^2+8^2}
\\\\\\
d=\sqrt{36+64}
\implies
d=\sqrt{100}\implies d=10[/tex]
