Finding Areas of Irregular Figures and Circles Subtracting

What is the formula for calculating the area of a circle?

• 2πr

• πr^2

• 2πd

• πd

Tags

CCSS.7.G.B.4

What attribute is used to determine the area of subdivisions in a composite figure?

• Area

• Perimeter

• Volume

• Circumference

Tags

CCSS.3.MD.C.7D

In a composite figure, what is the purpose of subdividing the figure into known shapes?

• To simplify calculations

• To change the shape of the figure

• To increase the area of the figure

• To decrease the perimeter of the figure

Tags

CCSS.3.MD.C.7D

When solving contextual problems involving composite plane figures, what should be the final step?

• Subdividing the figure into known shapes

• Identifying the number of sides in the figure

• Finding the dimensions of the figure

• Calculating the area or perimeter of the entire figure

Find the area of the gray/shaded region. Remember to subtract the area that is on the inside of the bigger circle.

• 386.97 cm²

• 122.5 cm²

• 50.3 cm²

• 102.4 cm²

The radius of the larger circle is 5 meters. The radius of the smaller circle is 2.5 meters. What is the approximate area of the shaded region of the larger circle?

• 5 m²

• 20 m²

• 59 m²

• 79 m²

What is the area of this irregular figure?

• 17.5 units2

• 17 units2

• 21 units2

• 16.5 units2

Find the area.

• 126 ft²

• 39 ft²

• 156 ft²

• 80 ft²

Tags

CCSS.3.MD.C.7D

Find the area of the irregular figure.

• 66.75 m 2

• 54 m 2

• 11.25 m 2

• 60.75 m 2

Tags

CCSS.6.G.A.1

• 663
• 322
• 630
• 654

Tags

CCSS.3.MD.C.7D