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If the side of an equilateral triangle is $l$, then express the perimeter of the triangle in terms of $l$.
Given:
The side of an equilateral triangle is $l$.
To do:
We have to express the perimeter of the triangle in terms of $l$.
Solution:
We know that,
The perimeter of a triangle is equal to the sum of the lengths of the sides.
The sides of an equilateral triangle are equal in length.
Therefore,
Perimter of the given triangle $=l+l+l=3l$.
The perimeter of the given triangle in terms of $l$ is $3l$.
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