Circles Circumference

If the circumference of a circle is 22 π ft, what is the radius?

• 22 ft

• 11ft

• π ft

• no ft

If the circumference of a circle is 22π , what is the diameter?

• 22 ft

• 11 ft

• π ft

• 0 ft

If the circumference of a circle is 44 π feet, what is the radius?

• 22 ft

• 44 ft

• 33 feet

• 3.14 feet

The stained glass window is a semicircle. What is the distance around the window?

• 40.82 inches

• 66.82 inches

• 81.64 inches

• 107.64 inches

What is the circumference of the following shape? (use an exact value)

• 14π mi

• 7π mi

• 49π mi

• 43.98 mi

What is the approximate circumference of a plate with a diameter of 10 inches? Use 3.14 for Pi.

Mathematical Equivalence

ON

Tags

CCSS.Math.Content.7.G.B.4

Mathematical Equivalence

ON

The _____ is the distance from the center to any point on the circle.

• diameter

• radius

• π

• center

If you are given the diameter, how can you calculate the radius?

• Multiply the diameter by 2

• Divide the diameter by 2

• Add 2 to the diameter

• Subtract 2 from the diameter

Which segment is a radius?

• LM

• DC

• BD

• ML