What is the perimeter of this rectangle?

The perimeter is defined as the sum of all the sides of any polygon.

A rectangle is a polygon with 4 sides and 2 pairs of parallel sides. Therefore, in order to find the perimeter of any rectangle, we can either add up all the sides given to you or use a formula which states that:

                                            P = 2L + 2W
Where,
L is the length of the rectangle and W is the width of a triangle.

For example:
A triangle with length = 5 cm and Width = 3 cm.
The Perimeter will be:
                                    P = 2×5 + 2×3
                                    P = 10 + 6
                                    P = 16 cm

It comes out of vehicles which pollutes the air