Answer
Distance=Distance $=\sqrt {(1-(-1))^{2}+(-1-3)^{2}+(2-0)^{2}}$
$=\sqrt {2^{2}+(-4)^{2}2^{2}}$
$=\sqrt {24}$ units.
Work Step by Step
Distance $=\sqrt {(1-(-1))^{2}+(-1-3)^{2}+(2-0)^{2}}$
$=\sqrt {2^{2}+(-4)^{2}2^{2}}$
$=\sqrt {24}$ units.