Calculating Total Area of Shapes

The video tutorial explains how to calculate the total area of a composite shape by using the additive property of area. It demonstrates this by breaking down a shape into blue and red sections, calculating their areas, and summing them to find the total area. The tutorial further illustrates the concept by adding a green section and recalculating the total area, emphasizing the additive nature of area calculation.

What does it mean when we say that area is additive?

• You can subtract the areas of different sections.

• You can multiply the areas of different sections.

• You can divide the areas of different sections.

• You can add the areas of different sections to find the total area.

If a shape is divided into two sections, one blue and one red, how do you find the total area?

• Multiply the area of the blue section by the area of the red section.

• Divide the area of the blue section by the area of the red section.

• Add the area of the blue section to the area of the red section.

• Subtract the area of the red section from the area of the blue section.

What is the total area of a shape with a blue section of 12 square inches and a red section of 42 square inches?

• 54 square inches

• 30 square inches

• 24 square inches

• 64 square inches

How do you find the new total area when a green section is added to a shape?

• Add the area of the green section to the total area.

• Subtract the area of the green section from the total area.

• Divide the total area by the area of the green section.

• Multiply the area of the green section by the total area.

What is the total area of a shape with sections measuring 12, 42, and 24 square inches?

• 66 square inches

• 54 square inches

• 78 square inches

• 36 square inches

If a new section is added to a shape, what should you do to find the new total area?

• Multiply the area of the new section by the existing total.

• Subtract the area of the new section from the existing total.

• Ignore the new section.

• Add the area of the new section to the existing total.