Perimeter of Composite Figures with Circles

The distance AROUND an object is called the 

• area

• perimeter or circumference

• volume

Which expression could be used to find the approximate circumference of the quilt piece?

• 2(16)π

• 2(8)π

• 2(8)

• 8π

The diameter of the semicircle is 8 cm. Find the perimeter.

• 25.12 cm

• 33.12 cm

• 20.56 cm

• 100.48 cm

Find the perimeter.

• 20.56 in

• 17.3 in

• 17.8 in

• 31.88 in

A half circle is joined to an equilateral triangle with side lengths of 12 units. What is the perimeter of the resulting shape?

• 113.04 units

• 42.84 units

• 61.68 units

• 36 units

Find the perimeter

• 14 m

• 43.96m

• 176 m

• 191.96 m

Find the perimeter.

• 60 units

• 81.64 units

• 141.64 units

• 74.82 units

Find the perimeter.

• 30 units

• 39.42 units

• 33.42 units

• 30.42 units

The distance around an object is called the

• area

• perimeter or circumference

• volume

• surface area

What formulas can be applied to solve problems involving composite plane figures?

• Diameter, radius, and area formulas

• Volume, surface area, and perimeter formulas

• Length, width, and height formulas

• Perimeter, circumference, and area formulas