A parallelogram has adjacent sides of lengths 12.1 cm and 6.2 cm. Calculate its perimeter.

The image shows a parallelogram, indicated by the pairs of parallel arrows on opposite sides. In a parallelogram, opposite sides are equal in length.

The lengths of two adjacent sides are given as $12.1 \text{ cm}$ and $6.2 \text{ cm}$.

The perimeter $P$ of a parallelogram with adjacent side lengths $a$ and $b$ is given by the formula:

Let $a = 12.1 \text{ cm}$ and $b = 6.2 \text{ cm}$.

The perimeter of the parallelogram is $\text{36.6 cm}$.