Answer
$-100$
Work Step by Step
We know that for a matrix
\[
\left[\begin{array}{rrr}
a & b & c \\
d &e & f \\
g &h & i \\
\end{array} \right]
\]
the determinant, $D=a(ei-fh)-b(di-fg)+c(dh-eg).$
Hence here $D=2(0-6)-1(0-2)+(-3)(30-0)=2(-6)-1(-2)+(-3)(30)=-100$
