Find a unit vector that is orthogonal to both $u$ and $v.$

$u=($:$-8,-6,4$:$)$

$v=($:$12,-16,-2$:$)$

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$5.[-/1$ Points$]$

$$ LARCALC$1211\mathrm{.}4\mathrm{.}025.$

Verify that the points are the vertices of a parallelogram, and find its area.

$A(1,1,3),B(10,-4,-1),C(12,-1,-8),D(3,4,-4)$

can you answer both questions pls