Perimeter of Rectilinear Shapes

If the perimeter of a rectangle is 36 cm and its width is 4 cm, what is its length?

• 8

• 12

• 20

• 16

A square has a perimeter of 40 meters. What is the length of each side?

• 5

• 8

• 15

• 10

Calculate the perimeter of a rectangle with length 15 cm and width 9 cm.

• 24 cm

• 30 cm

• 36 cm

• 48 cm

If the perimeter of a rectangle is 48 cm and its length is 16 cm, what is its width?

• 8 cm

• 24 cm

• 4 cm

• 12 cm

What is the perimeter of the figure?

• 80 mm

• 35 mm

• 36 mm

• 40 mm

What is the perimeter of the figure?

• 36 m

• 48 m

• 14 m

• 28 m

Byron says that the perimeter of the figure is 75 cm. Olivia says the perimeter of the figure is 42 cm. Who is correct?

• Byron is correct.

• Olivia is correct.

• Neither are correct.

The perimeter is ______ cm.

To calculate the perimeter of a shape, you need to ​ (a)   all the side lengths.

• add

• subtract

• divide

Calculate the perimeter of each of the below shapes and match them with the correct perimeters.

• 51 cm

• 
• 72 m

• 
• 44 cm

• 
• 40 cm

• 
• 46 cm

•