Question

the area of an equilateral triangle is 173.2 m square find its perimeter

Answer 1

given √3/4. x. a²= 173.2

a²=173.2x4/√3
a²=173.2x4/1.732
a²=100x4
a²=400
a= √400
a=20m
perimeter =3a
=3x20
=60m

Answer 2

Hey!
Area of equilateral triangle=√3/4*a^2
=)173.2=√3/4*a^2
=)a^2=173.2*4/√3
=)a^2=692.8/1.732. (putting the value of`√3)
=)a^2=400
=)a=20m
so, perimeter of equilateral triangle=3*side
=3*20=60m
Hope it helps you