A) \[\frac{3}{4}{{a}^{2}}\]
B) \[\frac{\sqrt{3}}{4}{{a}^{2}}\]
C) \[\frac{3\sqrt{3}}{4}{{a}^{2}}\]
D) \[\frac{3\sqrt{3}}{2}{{a}^{2}}\]
Correct Answer: B
Solution :
(b): Area
Area \[=\frac{1}{2}.\frac{a}{2}.\frac{\sqrt{3}}{2}\,a=\frac{\sqrt{3}{{a}^{2}}}{4}\]
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