Exercise 1 Page 829

For the given parallelogram, we will find its perimeter and its area one at a time.

Perimeter

The perimeter of a parallelogram is calculated by adding its four side lengths.

We are given the side lengths of the parallelogram as $13$ centimeters and $15$ centimeters. The opposite sides of parallelograms are congruent. Therefore, we know that the lengths of the opposite sides are also $13$ centimeters and $15$ centimeters.