Circle Circles Circles

If the area of a circle is 25 π in² , then the diameter is?

• 10 in

• 5 in

• 25 in

• pi in

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

• F

• G

• H

• J

• 7.85 ft

• 15.7 ft

• 19.63 ft

• 31.4 ft

Here is a picture of a Ferris wheel. It has a diameter of 80 meters.How far does a rider travel in three complete rotations around the Ferris wheel?

• 753.6 meters

• 251.2 meters

• 125.6 meters

• 376.8 meters

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

• 22 ft

• 44 ft

• 33 feet

• 3.14 feet

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

If the area of circle is 100 π , find the radius of the circle.

• 10 π

• 10

• 50

• 50 π