Question

find the perimeter of an equilateral triangle with side 7 cm?​

Answer 1

Answer:

21 centemeter

Step-by-step explanation:

area of equilateral triangle is = side*3

area of equiletaeral triangle whose side is 7 cm

= 3*7

=21 CM

thank you

Answer 2

Answer:

Hence, value of perimeter of equilateral triangle will be 21 cm

Step-by-step explanation:

In context to question asked,

We have to determine the perimeter of equilateral triangle.

As per question,

We have,

Side of triangle = 7 cm

As we know that,

• All the sides of equilateral triangle are same.

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

As we have,

Formula for determining the perimeter of equilateral triangle as,

$Perimeter = side +side +side = 3 \times side$

So, for determining the value of perimeter of equilateral triangle,

We will put the value of length of triangle given in the question in above formula,

Thus we will get,

$Perimeter = 3 \times sides = 3 \times 7 = 21\:cm$