Question

if the perimeter of an equilateral triangle is 60 cm then what is its area​

Answer 1

Step-by-step explanation:

perimeter = 60 cm

side = perimeter / 3

= 60/ 3

= 20 cm

Answer 2

Answer:

173.2 cm²

Step-by-step explanation:

Perimeter of equilateral triangle = 60 cm

Side of triangle = (60÷3) cm = 20 cm

Area of equilateral triangle = √3/4 a², where a is the side.

Hence, area = √3/4 × (20)² = √3/4 × 400 = √3 × 100 = 173.2 cm²