Practice Quiz for Lessons 8.1 & 8.2

The diameter of a circle is 12 feet. Find the radius.

• 5 feet

• 24 feet

• 6 feet

• 4 feet

Tags

CCSS.7.G.B.4

The radius of a circle is 4.2 feet. Find the diameter.

• 8.4 feet

• 2.1 feet

• 12.6 feet

Tags

CCSS.7.G.B.4

Find the circumference of the circle. Round your answer to the nearest hundreth.

• 43.8 inches

• 44.96 inches

• 44 inches

• 45 inches

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

• 18.84 meters

• 9.42 meters

• 15.3 meters

• 15.42 meters

Estimate the perimeter of the figure.

• 16 inches

• 18 inches

• 12 inches

• 14 inches

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

• 24 inches

• 34.7 inches

• 31.85 inches

• 28.85 inches

The figure is made up of a rectangle and two semicircles. Find the perimeter. Round your answer to the nearest tenth.

• 29.8 inches

• 23.8 inches

• 31.7 inches

• 26.4 inches

The circumference of a roll of tape is 13 inches. The circumference decreases by 2 inches after you use it to pack up some boxes. Find the cirumference of the roll after the decrease. Round your answer to the nearest tenth.

• 34.54 inches

• 40.82 inches

• 37.68 inches

• 31.40 inches

The circumference of the smaller circle is 30% of the circumference of the larger circle. The smaller circle has a diameter of 4 inches. Find the circumference of the larger circle. Round your answer to the nearest tenth.

Hint: write a proportion.

• 12.6 inches

• 376.8 inches

• 41.9 inches

• 37.6 inches

A garden is made up of a rectangle and two semicircles. Find the perimeter of the garden.

• 58 feet

• 71 feet

• 42 feet

• 29 feet