Circle Geometry Quiz

Calculate the diameter of a circle with a radius of 5 cm.

• 15 cm

• 5 cm

• 10 cm

• 25 cm

What is the diameter of a circle if the circumference is 31.4 cm?

• 5 cm

• 10 cm

• 15 cm

• 20 cm

If the radius of a circle is 8 cm, what is its diameter?

• 10 cm

• 16 cm

• 20 cm

• 12 cm

Find the radius of a circle with a diameter of 12 cm.

• 8 cm

• 10 cm

• 6 cm

• 4 cm

The circumference of a circle is 62.8 cm. What is the radius?

• 15 cm

• 20 cm

• 10 cm

• 5 cm

If the diameter of a circle is 20 cm, what is its radius?

• 5 cm

• 15 cm

• 10 cm

• 25 cm

Determine the length of a chord in a circle with a radius of 6 cm and a central angle of 60 degrees.

• 6 * √3 cm

• 36 cm

• 12 cm

• 3 * √3 cm

Find the length of a chord in a circle with a radius of 10 cm and a central angle of 45 degrees.

• 10 * tan(45/2)

• 10 * cos(45/2)

• 10 * sin(45/2)

• 10 * sin(45)

What is the property of a circle that states all points on the circle are equidistant from the center?

• Radiality

• Tangentiality

• Concentricity

• Diameter

Identify the property of a circle that is defined as the distance around the circle.

• diameter

• radius

• circumference

• area