Question

the side of equilateral triangle is showen by l.express the peremetre of the equilateral triangle using l.

Answer 1

Heya !!!!

This is your answer.....

Let the length of one side of equilateral triangle be l.

Let the one side of triangle be a.
The second side be b.
and the third side be c.

We know that there are three sides in equilateral triangle and we also know that these three sides are in length.

As we know that perimeter is the sum of all sides.
So, perimeter of equilateral triangle will b ...

a + b + c.
But all sides are equal.
a = b = c = l

So,
l + l + l = 3l.

Hence, the perimeter of equilateral is 3l if the length of one side is l.

Hope it helps....