Question

a perimeter of equilateral side is 81 .then find side of the triangle​

Answer 1

Answer:

Hence, side of equilateral triangle will be 27 units

Step-by-step explanation:

In context to question asked,

We have to determine the side of equilateral triangle.

As per question,

We have,

Perimeter of equilateral triangle = 81 units

As we know that,

Equilateral triangle is that particular triangle whose all sides are equal.

The perimeter of equilateral triangle can be determined by adding the value of all the sides of triangle.

As, we have,

Formula for determining the perimeter of equilateral triangle as,

$Perimeter = 3 \times sides$

So, for determining the value of side of triangle, we will put the value of perimeter of triangle in above formula.

Thus we will get,

$Side = \frac{perimeter}{3}\\=>Side = \frac{81}{3} = 27\:units$

Answer 2

Answer:

The side of an equilateral triangle is 27 .

Step-by-step explanation:

Given information,

Perimeter of equilateral triangle is 81

We have to find out the side of an equilateral triangle.

Equilateral triangle means the triangle which is having all equal sides.

By finding the length of one side we can find out the length all sides.

As we know that,

The perimeter of equilateral triangle = 3S

Where,

S is the side of an equilateral triangle.

By putting given values in the formula

81 = 3 S

$S = \frac{81}{3}$

S = 27

Hence,

The side of an equilateral triangle is 27 .