Question

If the side of an equilateral triangle is x, find its perimeter.

Answer 1

Answer:

3x

Step-by-step explanation:

side of an equilateral triangle = x

all sides of an equilateral triangle are equal. so, all sides of the given equilateral triangle will be x

therefore, perimeter of the equilateral triangle

= x + x + x + x = 3x

Answer 2

Answer:

∴ Perimeter of an equilateral triangle is $3x$ units.

Step-by-step explanation:

In context with question asked,

• We have to find the perimeter of an equilateral triangle.
• We know that, the length of all sides of equilateral triangle is same.
• Perimeter of an equilateral triangle is the sum of all sides of the triangle.
• The formula for perimeter of an equilateral triangle is given by,

          Perimeter of an equilateral triangle = $3\times side$

• Here, side of an equilateral triangle = $x$ units
• So,  

         Perimeter of an equilateral triangle = $3\times side$

                                                            = $3x$ units

• ∴ Perimeter of an equilateral triangle is $3x$ units.