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1.

A. $\frac{\sqrt{3} a^{2}}{2}$
B. $\frac{\sqrt{3} a^{2}}{2}$
C. $\frac{\sqrt{3} a^{2}}{2}$
D. $\frac{\sqrt{3} a^{2}}{2}$

Answer: Option D

Explanation:

We know,

Area of equilateral triangle= √3/4 ×(one side)²

So,the area is √3/4 ×a²

(Ans)

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