The perimeter of a parallelogram is 36 cm, and one of the sides is twice as large as the other. What is the smallest of its sides?

From the condition, we know that the perimeter of the parallelogram is 36 cm. We also know that one of the sides is 2 times larger than the other.

In order to answer the question of the problem, we will compose and solve the equation.

Let’s start by denoting by the variable x cm the length of the shorter side that we need to find. Whereas 2x cm is the length of the second side.

We look for the perimeter of the parallelogram by the formula:

P = 2 (a + b);

2 (x + 2x) = 36;

x + 2x = 36: 2;

x + 2x = 18;

3x = 18;

x = 18: 3;

x = 6 cm length of the shorter side of the parallelogram.