Question

the perimeter of an equilateral triangle is 60 m the area will be

Answer 1

perimeter of an equilateral triangle=60
one side of the equilateral triangle=60÷3=20
area of the equilateral triangle= Root 3÷4×20×20=100root3

Answer 2

Perimeter of the equilateral triangle is given 60m
Each side are equal so length of one side=60/3
=20
Area of equilateral triangle=
$\frac{ \sqrt{3} }{4} {(side)}^{2}$
$\frac{ \sqrt{3} \times 20}{4}$
$20 \sqrt{3}$