The perimeter of an equilateral triangle is 24 cm. What is the length of each side of it?

The perimeter of any geometric figure is equal to the sum of the lengths of its sides.
We are given an equilateral triangle. In an equilateral triangle, all sides and angles are equal to each other. Let’s write down the formula for the perimeter of an equilateral triangle:
P = a + a + a = 3a,
where P is the perimeter, and is the lateral side of an equilateral triangle.
Let us express the side of the triangle from the formula for the perimeter:
a = P: 3.
Substituting the value of the perimeter in the formula, we calculate the length of the side of the triangle:
a = 24: 3 = 8 cm.
Answer: The length of each side of an equilateral triangle is 8 cm.