Question

1. If a perimeter of an equilateral triangle is 27 cm, then its side is​

Answer 1

Step-by-step explanation:

In a equilateral triangle all sides are equal

Perimeter means sum of all sides

so,there are 3 sides

lenght of a side is 27/3

; So,lenght of a side is 9 cm

Answer 2

Answer:

Hence the side of the equilateral triangle is 9 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 perimeter of an equilateral triangle is 27cm.

We need to find the side of equilateral triangle.

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

$P=3a$

Where a is the side of the triangle,

So, the side of the triangle will be,

$3a=P\\a=\frac{P}{3}$

Substitute the value of perimeter in the above equation we get,

$a=\frac{27}{3}$

Dividing both numerator and denominator with 3 we get,

$a=\frac{9}{1}\\a=9cm$

Hence the side of the equilateral triangle is 9 cm.