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Area of a General Quadrilateral

Find area of ...

Question

Find area of an equilateral triangle of side $16 c m .$

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Solution

$\begin{matrix} A s t h e a r e a o f a n e q u i l a t e r a l t r i a n g l e i s \frac{\sqrt{3}}{4} a^{2} w h e r e a i s o n e s i d e S o, a r e a = \frac{\sqrt{3}}{4} \times 16^{2} = 64 \sqrt{3} \end{matrix}$

Hence, this is the answer.

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