Question

If one side of an equilateral triangle is 15 cm find its perimeter

Answer 1

Side of equilateral triangle = 25 cm

Perimeter of equilateral triangle = 3*side

= 3*25

= 75cm

Answer 2

As we know, The sides of the equilateral triangle will be equal.

Then,

Each of the sides is 15 cm

The Perimeter of the triangle,

$\sf \pink{\implies \: Perimeter = Sum \: of \: 3 \: sides}$

Then,

The Perimeter of the triangle is,

$\sf \red{ \implies \: 15 + 15 + 15 = 45 \: cm}$

Hence, 45 cm is the Perimeter.