# What is the area of an equilateral triangle with sides of 10?

May 27, 2015

The formula for area of an equilateral triangle is:
$\frac{\sqrt{3}}{4} {\left(s i \mathrm{de}\right)}^{2}$

the side =$10 c m$
(assuming the unit to be in cm)

area = $\frac{\sqrt{3}}{4} {\left(s i \mathrm{de}\right)}^{2}$
$= 0.433 \times {\left(10\right)}^{2}$
$= 0.433 \times 100$

area =color(blue)(43.3 cm^2