Question

Find the length of the side of the equilateral triangle, whose perimeter is 18 cm.

• A. 6

Answer 1

The correct option is A 6
Given,
Perimeter of the equilateral triangle = 18 cm
Let the length of the side of the triangle be 'x'.

Perimeter of the equilateral triangle = 18 cm
$x+x+x=18$
$3x=18$

Value of $x$	L.H.S	R.H.S
1	3	18
6	18	18

The value of $x=6$ satisfies the L.H.S = R.H.S
The length of the side of the equilateral triangle is 6 cm.