Solving with Composite Figures

How can the perimeter of a composite plane figure be calculated?

• By dividing the areas of the subdivisions

• By subtracting the areas of the subdivisions

• By multiplying the areas of the subdivisions

• By adding the perimeters of the subdivisions

Which of the following is an example of a composite plane figure?

• A single triangle

• A figure made up of multiple shapes

• A perfect circle

• A square with equal sides

Dennis is building a square deck as shown in the figure above. On one side of the deck, he puts a square hot tub. The hot tub is 5 feet long. How many square feet is the deck, not including the space for the hot tub?

In the image above, find the area of the green frame.

• 28 sq cm

• 36 sq cm

• 64 sq cm

• 100 sq cm

The figure above shows the floor plan of a carpeted area in front of a stage. How many square feet of carpeting is needed to cover the area?

Stones shaped like the figure above are being used to create a walkway. How many square inches is each stone?

Calculate the area.

• 336 cm ²

• 172 cm ²

• 459 cm ²

• 522 cm ²

Calculate the area.

• 200 in. ²

• 400 in. ²

• 250 in. ²

• 300 in. ²

Calculate the area.

• 50 cm ²

• 43 cm ²

• 33 cm ²

• 40 cm ²

Calculate the area. Use 3.14 for pi. Round the nearest tenth if needed.

• 57.1 m ²

• 32 m ²

• 58 m ²

• 57.12 m ²