Chapter 7 Perimeter

What is the formula to calculate the perimeter of a square?

• side length + side length

• 2 * side length

• 4 * side length

• side length * side length

Lindsey used 80 feet of border around her bulletin board. The width of the bulletin board is 20 feet. Which equations can be used to find the the length of the bulletin board.

• 80= (2*L) +20

• 80=2*20+L

• 80=(2*L)+(2*20)

• 80=(2*L) + 40

If the side of a square is 8 cm, what is the perimeter?

• 16 cm

• 32 cm

• 64 cm

• 24 cm

What is the perimeter of the figure? It is ... centimetres.

• 26

• 27

• 28

• 30

The perimeter of the figure is ... centimetres.

• 25

• 26

• 27

• 28

The perimeter of the figure is ... centimetres.

• 25

• 26

• 27

• 28

Look at the figure! Its perimeter is ... centimetres.

• 30

• 32

• 34

• 36

The perimeter of the figure is ... milimetres.

• 3

• 30

• 300

• 3000

The perimeter of a rectangle is 24 cm.

         Its length is 8 cm.

Therefore, the width is ... centimetres.

• 4

• 5

• 6

• 7

What is the perimeter in m. ?

• 17 m.

• 13 m.

• 15 m.

• 18 m.