Question

Find side of equilateral triangle if perimeter is equal to 51 cm​

Answer 1

Answer:

17 cm

Step-by-step explanation:

Equilateral triangle has all(3) sides equal. So, perimeter of equilateral triangle is 3 × Side

Perimeter of equilateral triangle = 51 cm

3×s = 51 cm

s = 51 cm/3

s = 17 cm

Ans= Each side of equilateral triangle is 17 cm.

Answer 2

Answer:

Hence the side of the equilateral triangle is 17 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 51 cm.

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,

$a=\frac{51}{3}$

Dividing both numerator and denominator with 3 we get,

$a=\frac{17}{1}\\a=17cm$

Hence the side of the equilateral triangle is 17 cm.