Question

find the length of a side equilateral triangle whose perimeter is 72 cm

Answer 1

Answer:

a+a+a = 72 cm

3a=72cm

a=72/3

a=24cm

Answer 2

Given,

The perimeter of an equilateral triangle is 72 cm.

To Find,

The length of a side =?

Solution,

We can solve the question as follows:

It is given that the perimeter of an equilateral triangle is 72 cm. We have to find the length of the side.

$Perimeter = 72\: cm$

In an equilateral triangle, all the sides are equal. Therefore, the perimeter of an equilateral triangle will be 3*a, where a is the length of each side.

$Perimeter\: of\: an\: equilateral\: triangle = a + a + a = 3*a$

Now,

Substituing the value of the given perimeter in the above formula,

$72 = 3*a$

$a = \frac{72}{3}$

$a = 24\: cm$

Hence, the length of each side is 24 cm.