Answer
$\sqrt {275.6}$ units $\approx16.601$ units
Work Step by Step
Let $P=(x_{1},y_{1})=(7.4,-8.6)$ and $Q=(x_{2},y_{2})=(-1.2,5.6)$
Finding the distance between P and Q,
$d(P,Q)=\sqrt {(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}$
$d(P,Q)=\sqrt {(-1.2-(7.4))^{2}+(5.6-(-8.6))^{2}}$
$d(P,Q)=\sqrt {(-8.6)^{2}+(14.2)^{2}}$
$d(P,Q)=\sqrt {73.96+201.64}$
$d(P,Q)=\sqrt {275.6}\approx16.601$
