.identify what each leters represents.

the perimeter of a rectangle is twice its length plus twice its width

In the given statement, let's break down the parts and identify what each letter represents:

P: Represents the perimeter of the rectangle.
L: Represents the length of the rectangle.
W: Represents the width of the rectangle.

The formula stated in the question implies that the perimeter (P) of a rectangle can be calculated by adding twice the length (2L) of the rectangle to twice the width (2W) of the rectangle.