Rectangle Perimeter: Calculate the Distance Around a 2cm × 7cm Shape

Question

Look at the rectangle below.

Side AB is 2 cm long and side BC has a length of 7 cm.

What is the perimeter of the rectangle?

00:00 Calculate the perimeter of rectangle ABCD?

00:03 Opposite sides are equal in a rectangle

00:13 The perimeter of the rectangle equals the sum of its sides

00:23 Let's substitute appropriate values and solve for the perimeter

00:29 And this is the solution to the problem

Since in a rectangle every pair of opposite sides are equal to each other, we can claim that:

$AB=CD=2$

$AD=BC=7$

Now we can add all the sides together and find the perimeter:

$2+7+2+7=4+14=18$

18 cm