Question

Find the perimeter of the equilateral triangle given below.

• A. 125 cm
• B. 15 cm
• C. 25 cm
• D. 20 cm

Answer 1

The correct option is B

15 cm

In an equilateral triangle, all the three sides have equal length.
Perimeter is the measure of the distance of the boundary of a planar object. It is also defined as the total sum of lengths of all the bounding sides of a planar object.

Perimeter of an equilateral triangle = 3 x side length
Given, side length = 5 cm
$\therefore$ Perimeter of the given equilateral triangle
= (3 x 5) cm = 15 cm