Introduction to Composite Figures

What is the formula for finding the area of a composite figure?

• Multiply the length by the width

• Subtract the perimeter from the total area

• Divide the figure into equal parts and find the area of one part

• Break down the figure into simpler shapes, find the area of each shape, and then add them together.

Tags

CCSS.3.MD.C.7D

How can you break down a complex composite figure into simpler shapes to find the area?

• Use a random number generator to find the area

• Identify the individual shapes within the figure and calculate their individual areas, then add the areas of the simpler shapes together.

• Ask someone else to calculate the area for you

• Guess the area without breaking down the figure

Tags

CCSS.3.MD.C.7D

What is a composite figure?

• A figure with three sides

• A figure with only one shape

• A figure with no shapes

• A shape or figure made up of two or more simple shapes

Tags

CCSS.1.G.A.2

Find the area of the composite figure

• 40

• 9

• 49

• 61

Tags

CCSS.3.MD.C.7D

The diagram below shows the dimensions of a new swimming pool. A cover is needed for the pool, what will be the approximate area of the cover?

• 720 ft squared

• 127.17 ft squared

• 592.83 ft squared

• 254.34 ft squared

Find the area.

• 125 cm squared

• 253 cm squared

• 379 cm squared

• 251 cm squared

What are the steps to find the perimeter of a composite figure?

• Add up the lengths of all the sides of the figure.

• Divide the lengths of all the sides of the figure.

• Subtract the lengths of all the sides of the figure.

• Multiply the lengths of all the sides of the figure.

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CCSS.3.MD.D.8

What is the difference between a composite figure and a regular figure?

• A composite figure has equal sides and angles, while a regular figure has different sides and angles.

• A composite figure is made up of multiple shapes, while a regular figure is a single shape with equal sides and angles.

• A composite figure is made up of organic shapes, while a regular figure is made up of geometric shapes.

• A composite figure is 2-dimensional, while a regular figure is 3-dimensional.

Tags

CCSS.1.G.A.2

What are some examples of composite figures in real life?

• Soccer field, stop sign, pizza

• Tennis court, yield sign, sandwich

• Basketball court, traffic light, hamburger

• Baseball field, speed limit sign, lasagna

Tags

CCSS.1.G.A.2

What are the common mistakes to avoid when finding the area of a composite figure?

• Relying on estimation instead of precise measurements

• Not breaking the figure into simpler shapes, forgetting to include all the necessary components, and miscalculating the measurements

• Using the wrong formula

• Not considering the units of measurement