Test on Diameter, Radius and Circumference of a Circle

What is the circumference of a circle with a radius of 5 centimeters? Use 3.14 for pi.

• 31.4 cm

• 78.5 cm

• 3.14 cm

• 7.85 cm

The diameter of Karen’s bicycle wheel is 18 inches. What is the circumference to the nearest inch? Use 3.14 for pi.

• 20 in

• 40 in

• 57 in

• 180 in

A circle has a diameter that measures 6 inches. What is the area of the circle to the nearest tenth? Use 3.14 for pi

• 28.3 in²

• 113 in²

• 56.6 in²

• 112.4 in²

A circle has a radius that measures 10 centimeters. What is the area of the circle to the nearest tenth? Use 3.14 for pi.

• 62.8 cm²

• 314 cm²

• 628 cm²

• 31.4 cm²

• 21.98 cm

• 43.96 cm

• 44 cm

• 88 cm

which segment above represents the diameter

• BC

• AC

• BD

• LM

• 31.4 cm

• 62.8 cm

• 15.7 cm

• 28.26 cm

Find the circumference of the circle. Use 3.14 for π.

• 63.585 in²

• 28.26 in

• 14.13 in

• 4.5 in

Which segment is the diameter?

• DE

• BO

• AO

• AB

Which segment is the diameter?

• AC

• BD

• LM

• CE