Question

The perimeter of equilateral triangle is 60 cm.find area

Answer 1

Step-by-step explanation:

let side be a

perimeter = 60 cm

3a=60

a=20 cm

area of equilateral triangle= √3/4×a²

√3/4×20×20

√3×20×5

√3×100

100√3 cm²

Answer 2

Answer:

An equalteral formula = a + b +c

So we can say that

a+b+c = 60+60+60

So = 180