Perimeter of simple and compound figures

Perimeter of simple and compound figures

by John Tabdi

Calculate the perimeter of simple and compound figures​

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Open Ended

Define perimeter.

Multiple Choice

What is the distance around the shape?

(perimeter)

• 6 in.

• 9 in.

• 12 in.

• 8 in.

Open Ended

A square field has a perimeter of 360 meters. What is the length of one of its sides?

Open Ended

How much string would you need to form a circular loop with a diameter of 28 cm.

Open Ended

Write the process of calculating the perimeter of a simple figure.

Multiple Choice

What is the perimeter of a shape?

• The space inside the shape

• The edge or border of a shape

• Both A and B

• Neither A or B

Multiple Choice

What is the perimeter of this shape?

• 33 cm

• 23 cm

• 36 cm

• 40 cm

Fill in the Blanks

Calculate the Perimeter of the semi-circle shown. Do not forget to insert the units.

Multiple Choice

Farmer Bob needs to build a fence for his chickens. The area he wants to build a fence around is 40 metres long and 20 metres wide. How many metres of fence does he need to buy?

• 800 m

• 100 m

• 60 m

• 120 m

Multiple Choice

Tim's father is installing a pool in the backyard. The shape and dimensions are shown in the image. If he has to use caution tape to outline the edge of the pool during installation, what length of caution tape is required?

• $$\left(56+20\pi\right)\ m$$

• $$(56+10π)\ m$$

• $$\left(76+20\pi\right)\ m$$

• $$66\pi\ m$$

Open Ended

Write the process of calculating the perimeter of compound figures.

​Sketching

1. Sketch ​compound objects and assign units for each edge.

2. ​Exchange your work with a peer and have them calculate the total perimeter.

Open Ended

Write two important lessons/topics you learnd today or key skills you've acquired.