Question

The side of an equilateral traingle is shown by $l$. Express the perimeter of equilateral triangle using $l$

Answer 1

Finding the perimeter of the triangle

Given that side of equilateral triangle is $l$.

As we know that perimeter of triangle is “sum of all sides”.

Also all sides of equilateral triangle are equal.

Therefore,

Perimeter$=l+l+l=3l$

Hence, the perimeter of equilateral triangle of side $l$ is $3l$