The perimeter of the parallelogram is 26m. One of the sides is 5m. Find the length of the remaining sides.

In order to find the second side of the parallelogram, we will compose and solve a linear equation in one variable. Applying for this the formula for finding the perimeter of the rectangle.

Let’s remember her:

P = 2 (a + b);

It is known from the condition that the perimeter of the parallelogram is 26 meters. It is also known that one of the sides is 5 meters.

Let us denote by the variable x cm the length of the second side of the parallelogram:

2 (5 + x) = 26;

5 + x = 26: 2;

5 + x = 13;

x = 13 – 5;

x = 8 meters length of the second side of the parallelogram.