Resposta:
\begin{gathered}d = \sqrt{(xb - xa)^{2} + (yb - ya)^{2}} \\\\d= \sqrt{(4 - (-2))^{2} + (-4 - 4)^{2}} \\\\d= \sqrt{6^{2} + (-8)^{2} \\\\\\\\\end{gathered}
\begin{gathered}d=\sqrt{36 + 64 } \\d=\sqrt{100} \\d=10u.c\end{gathered}
d=
36+64
d=
100
d=10u.c
