Question

an equilateral triangle has side lengths that measure ( x + 4 ) inches. the perimeter of the triangle is 18.6 inches. write an equation to find the value of ( x ). enter the correct equation in the box.

Explanation:

Step1: Define perimeter of equilateral triangle

Perimeter = $3 \times \text{side length}$

Step2: Substitute given values

$3(x + 4) = 18.6$

Answer:

$3(x + 4) = 18.6$