Question

Find the area of an equilateral triangle having each side 6 cm.

Answer 1

$$\begin{gathered} \mathrm{Area}\mathrm{of}\mathrm{equilateral}\mathrm{triangle}=\frac{\sqrt{3}}{4}\times (\mathrm{Side}{)}^2 \\ =\frac{\sqrt{3}}{4}\times (6{)}^2 \\ =\frac{\sqrt{3}}{4}\times 36 \\ =9\sqrt{3}{\mathrm{cm}}^2 \end{gathered}$$