Question

Find the area of an equilateral triangle having each side of length 10 cm.

Answer 1

Given:
Side of the equilateral triangle = 10 cm
Thus, we have:
$$\begin{gathered} \mathrm{Area}\mathrm{of}\mathrm{the}\mathrm{equilateral}triangle=\frac{\sqrt{3}}{4}{\mathrm{side}}^2 \\ =\frac{\sqrt{3}}{4}\times 10\times 10 \\ =25\times 1.732 \\ =43.3{\mathrm{cm}}^2 \end{gathered}$$