Circle Measurements and Properties

Find the circumference of the bottle cap. Use 3.14 for . Round to the nearest hundredth if necessary.

• 9.24 cm

• 9.42 cm

• 94.2 ft

• 942.4 cm

A circular clock has a circumference of 27 inches. Find the approximate diameter of the clock. Use 3.14 for . Round to the nearest hundredth if necessary.

• 8.06 in

• 9.62 in

• 8.60 in

• 86.4 in

Find the approximate radius of a circle with a circumference of 23.21 feet. Use 3.14 for . Round to the nearest hundredth if necessary.

• 3.70 ft

• 5.00 ft

• 2.50 ft

• 37.21 ft

How does the length of a radius of a circle compare to the length of a diameter? The length of a radius is one-half the length of a diameter.

• True
• False

Find the length of the radius.

• 6 in

• 3 in

• 12 in

• 3.14 in

Find the area of the circle. Use 3.14 for . Round to the nearest hundredth if necessary

• 88.97

• 82.80

• 8.820

• 88.20

What is the area of the center of the flower? Use 3.14 for . Round to the nearest hundredth if necessary.

• 70.7

• 7.27

• 7.07

• 6.07

Valeria has a semi-circular window installed. What is the area of the window? Use 3.14 for . Round to the nearest hundredth if necessary.

• 2034.72

• 20.347

• 2034.64

• 3034.72

The exact circumference of a circle is 14 yards. What is the approximate area of the circle? Use 3.14 for . Round to the nearest hundredth if necessary.

• 163.86

• 153.82

• 153.86

• 183.76