Question

Find the area of an equilateral triangle whose perimeter is 72cm

Answer 1

249.42 is area of equilateral triangle

Answer 2

x+x+x=72
3x=72
x=72/3
x=24
Therefore each side =24cm
semi perimeter=72/2
=36
$area \: of \: triangle =$
Therefore area of triangle=144√3