The length of one side of a parallelogram is 3 more than twice the length of the adjacent side. the perimeter of the parallelogram is 30cm. find the lengths of the two adjacent sides of the parallelogram.

4 cm and 11 cm.

Step-by-step explanation:

1. You can calculate the perimeter of a parallelogram as following:

Where a+b+c+d are the lenghts of the sides.

By definition the parallelogram has two pairs of parallel sides, therefore:

a=c and b=d

Then, you can calculate the perimeter as following:

2. Let's call the adjacent side , then the other side is 2x+3.

3. Substitute values  and solve for x:

4. Then the lenghts of the sides are:

true

step-by-step explanation: