Question

find the perimeter of an equilateral triangle whose side is 6 cm​

Answer 1

6+6+6=18 cm.....

perimeter of any figure = sum of all sides

in eq.∆ all sides are same

Answer 2

There are many ways to handle the answer of the question. We know that if a, b & c are the sides of a triangle, its perimeter is 2s=a+b+c

Here, a = b = c = 6⇒ perimeter = 18 cm.

HOPE IT HELPS