Question

If its perimeter of an equilateral triangle is 180 cm , what be its area.​

Answer 1

Step-by-step explanation:

sum of 3 sides = 180° {By angle sum property}

Let a be the each side of triangle

a+a+a= 180

=>3a=180=>a= 60 cm

therefore area=1/2×base× height

=>1/2× 60×60=1800cm²