Question

Find the perimeter of equilateral triangle whose side is 18 cm

Answer 1

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As,equilateral triangle has 3 sides and all the sides are equal.

Perimeter = Side ×3

Perimeter =18×3=54cm

The perimeter of equilateral triangle is 54 cm.

Answer 2

Answer:

Hence the perimeter of the equilateral triangle is 54 cm.

Step-by-step explanation:

According to the information provided in the question.

It is stated in the preceding question that,

The presented information is side of an equilateral triangle is 18 cm.

We need to find the perimeter of equilateral triangle.

The formula of perimeter of the equilateral triangle is as bellow,

$P=3a$

Where a is the side of the triangle,

Substitute the value of side that is 18 cm in the above equation we get,

$P=3\times 18\\P=54cm$

Hence the side of the equilateral triangle is 54 cm.