Question

For an equilateral triangle with side $5$ yard, the perimeter of the triangle will be

• A. $10$ yard
• B. $15$ yard
• C. $20$ yard

Answer 1

The correct option is B $15$ yard

Given: Side length of equilateral triangle $=5$ yard

And as we know, all the side of an equilateral triangle are equal, theefore, length of each sides of the equilateral triangle $=5$ yard as depicted in figure below,


Perimeter of equilateral triangle = $3\times$ one side length
$⟹$ Perimeter of equilateral triangle $=3\times 5=15$ yards.

Therefore, Perimeter of equilateral triangle whose one side length is $5$ yards $=15$ yards.