Calculate the Perimeter: Rectangle with Dimensions 9 by 5 Units

Question

Look at the following rectangle:

Find its perimeter.

00:00 Find the perimeter of the rectangle

00:03 The perimeter of the rectangle equals the sum of its sides

00:16 Opposite sides in a rectangle are equal

00:20 Let's substitute appropriate values according to the given data and solve for the perimeter

00:31 Let's solve for each 2 factors separately and then sum them

00:36 And this is the solution to the question

Since in a rectangle all pairs of opposite sides are equal:

$AD=BC=5$

$AB=CD=9$

Now we calculate the perimeter of the rectangle by adding the sides:

$5+5+9+9=10+18=28$