Question
Find the area of an equilateral triangle whose each side is $16 \mathrm{~cm}$. (Take $\sqrt{3}=1.73$ )
✓
Answer
Side of the equilateral triangle $=16 \mathrm{~cm}$
$\begin{aligned} & \therefore \text { Area }=\frac{\sqrt{3}}{4}(\mathrm{a})^2 \\ & =\frac{\sqrt{3}}{4} \times 16 \times 16 \\ & =1.73 \times 4 \times 16=110.72 \mathrm{~cm}^2\end{aligned}$
$\begin{aligned} & \therefore \text { Area }=\frac{\sqrt{3}}{4}(\mathrm{a})^2 \\ & =\frac{\sqrt{3}}{4} \times 16 \times 16 \\ & =1.73 \times 4 \times 16=110.72 \mathrm{~cm}^2\end{aligned}$
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