Circle Basics Review

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

• 24.56 cm

• 37.68 cm

• 10.26 cm

• 15.72 cm

Identify the radius, diameter, and circumference of a circle with a radius of 6 cm.

• Radius: 12 cm, Diameter: 6 cm, Circumference: 6π cm

• Radius: 3 cm, Diameter: 6 cm, Circumference: 18π cm

• Radius: 6 cm, Diameter: 12 cm, Circumference: 12π cm

• Radius: 6 cm, Diameter: 3 cm, Circumference: 9π cm

A segment connecting two points on a circle that passes through the center.

• diameter

• radius

• secant

• tangent

Calculate the circumference of a circle with a radius of 5 units.

• 31.42 units

• 25 units

• 15.71 units

• 10 units

What is the area of a circle with a radius of 8 meters?

• 200.96 square meters

• 16 square meters

• 64 square meters

• 100.48 square meters

Determine the area of a circle with a diameter of 10 inches.

• 50 square inches

• 25 square inches

• 78.54 square inches

• 100 square inches

In a circle with a radius of 15 units, an inscribed angle measures 60 degrees. Calculate the length of the intercepted arc.

• 225

• 7.5π

• 30π

• 15π/2

Calculate the area of a circle with a radius of 9 cm.

• 254.47 square cm

• 81 square cm

• 28.27 square cm

• 63.62 square cm

Find the circumference of a circle with a radius of 7 cm.

• 14 cm

• 44 cm

• 22 cm

• 44π cm

What is the part of the circle highlighted in red called?

• semi-circle arc

• major arc

• minor arc

• sector