Splash Screen

• composite figure

• Find the area of composite figures.

Find the Area of a Composite Figure

Find the area of the composite figure. Round to the nearest tenth.

The figure can be separated into two semicircles and a rectangle.

Find the Area of a Composite Figure

Answer: The area of the figure is about 14.1 + 14.1 + 72 or 100.2 square centimeters.

Area of one semicircle Area of rectangle

1. A2. B3. C4. D

A. 15.6 ft2

B. 16.2 ft2

C. 16.8 ft2

D. 17.1 ft2

Find the area of the composite figure. Round to the nearest tenth.

GARDENING The dimensions of a flower garden are shown. What is the area of the garden?

The garden can be separated into a rectangle and two congruent triangles.

Answer: The area of the garden is 35 + 5 + 5 or 45 square feet.

Area of rectangle Area of one triangle

1. A2. B3. C4. D

A. 48 ft2

B. 56 ft2

C. 64 ft2

D. 70 ft2

GARDENING The dimensions of a flower garden are shown. What is the area of the garden?

Find the Area of a Shaded Region

Find the area of the shaded figure. Round to the nearest tenth if necessary.

Find the area of the rectangle and subtract the area of the two triangles.

Find the Area of a Shaded Region

Answer: The area of the shaded region is 192 – 48 or 144 square inches.

Area of rectangle Area of triangles

A = 16 ● 12ℓ = 8 + 8

or 16, w = 6 + 6 or 12

A = 192Simplify.

A = 48

Simplify.

1. A2. B3. C4. D

A. 92.5 cm2

B. 80.5 cm2

C. 61 cm2

D. 39 cm2

Find the area of the shaded portion of the square. Round to the nearest tenth if necessary.

End of the Lesson