Question

Question 4
The area of an equilateral triangle with side $2\sqrt{3}cm$ is

Answer 1

Given, side of an equilateral triangle is $2\sqrt{3}cm$
Area of an equilateral triangle $=\frac{\sqrt{3}}{4}(side{)}^2$
$=\frac{\sqrt{3}}{4}(2\sqrt{3}{)}^2=\frac{\sqrt{3}}{4}\times 4\times 3=3\sqrt{3}=3\times 1.732=5.196c{m}^2$
Hence, the area of an equilateral triangle is 5.196 $c{m}^2$.