A) \[2{{a}^{2}}\]
B) \[\frac{{{a}^{2}}}{2}\]
C) \[\frac{\sqrt{3}{{a}^{2}}}{2}\]
D) \[\frac{2{{a}^{2}}}{\sqrt{3}}\]
Correct Answer: B
Solution :
According to the figure, Area = \[\frac{1}{2}\left| \text{ }\begin{matrix} 0 & 0 & 1 \\ a & -\frac{a}{2} & 1 \\ a & \frac{a}{2} & 1 \\ \end{matrix}\text{ } \right|\]\[=\frac{{{a}^{2}}}{2}\].You need to login to perform this action.
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