A) 6
B) 4
C) 8
D) 12
Correct Answer: B
Solution :
Since PQRS is a parallelogram with an area which is twice the area of \[\Delta PQR\]. Therefore, area PQRS \[=2.\frac{1}{2}\,\left| \,\begin{matrix} 2 & 1 & 1 \\ 4 & -1 & 1 \\ 3 & 2 & 1 \\ \end{matrix}\, \right|=4\].You need to login to perform this action.
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