Question

The perimeter of the given equilateral triangle is 42 cm find s if it's side length is (3s+2) cm​

Answer 1

14cm

Explanation:

Given parameters:

perimeter of the triangle = 42cm

length of side = (3s + 2)cm

Unknown:

Find the length of each side = ?

Solution:

The perimeter of a body is the sum of all its sides.

In this problem, we have been given an equilateral triangle. For such a triangle, all the sides are equal. So the perimeter is the sum of all the three sides;

(3s + 2) + (3s + 2) + (3s + 2) = 42

9s + 6 = 42

9s = 42 - 6

9s = 36

s = 4;

The length of its sides = 3s + 2

= 3(4) + 2

= 12 + 2

= 14cm