Question

If the perimeter of an equilateral triangle is 25.8cm,then the length of its side is

Answer 1

Answer:

8.6 cm

Step-by-step explanation:

Given,

Perimeter ( equilateral triangle ) = 25.8cm

To find : length of its side = ?

Let the length of each side be a.

In a equilateral triangle, all 3 sides are equal. So, its perimeter = 3a.

3a = 25.8 cm

a = 25.8 / 3

a = 8.6 cm

Therefore, the length of its side is 8.6 cm.

Answer 2

Given :

perimeter of an equilateral triangle = 25.8 cm

To find :

length of side of given equilateral triangle.

Solution :

The given triangle is equilateral.

so, all sides are same.

let, length of one side be 'a' cm.

Perimeter of an equilateral triangle = 3×a

25.8 = 3a

a = 8.6 cm

ANSWER:

The length of side of the given equilateral triangle is 8.6 cm.