Chapter 8 Quiz Review

The diameter of a circle is 9 feet. Find the radius.

• 9

• 3

• 18

• 4.5

The radius of a circle is 3.8 feet. Find the diameter.

• 14.44

• 3.8

• 7.6

• 57.76

Find the circumference of the circle. Round your answer to the nearest hundredth. Use 3.14 for pi.

• 9.43

• 18.85

• 9.42

• 18.84

Find the perimeter of the semicircular region. Round your answer to the nearest hundredth.

• 23.13

• 28.26

• 14.13

• 37.26

The figure is made up of a semicircle and a triangle. Find the perimeter. Round your answer to the nearest hundredth.

• 109.5

• 70.25

• 35.13

• 39.25

The circumference of the smaller circle is 20% of the circumference of the larger circle. Find the circumference of the larger circle. Round your answer to the nearest tenth.

• 18.84

• 3.77

• 376.8

• 94.2