Area of an equilateral triangle (root 3/4) a^2 from side or perimeter

1. A.
   $81\sqrt{3}$
2. B.
   $8\sqrt{3}$
3. C.
   $25\sqrt{3}$
4. D.
   $64\sqrt{3}$

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1. A.
   68.07
2. B.
   63.89
3. C.
   62.35
4. D.
   65.23

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1. A.
   $60\sqrt{3}\ \text{cm}^2$
2. B.
   $62\sqrt{3}\ \text{cm}^2$
3. C.
   $64\sqrt{3}\ \text{cm}^2$
4. D.
   $66\sqrt{3}\ \text{cm}^2$

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1. A.
   $144\sqrt{2}$
2. B.
   $36\sqrt{3}$
3. C.
   $36\sqrt{2}$
4. D.
   $144\sqrt{3}$

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1. A.
   $77\sqrt{3}$
2. B.
   $75\sqrt{3}$
3. C.
   $79\sqrt{3}$
4. D.
   $81\sqrt{3}$

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