Area and Circumference of Circles

Identify a radius of the circle.

• MO

• NP

• MP

• OP

Identify the diameter of the circle.

• MO

• NP

• MP

• OP

Calculate the radius of the circle if the diameter is 22.

• 44

• 15

• 28

• 11

Calculate the diameter of the circle if the radius is 4.5

• 2.25

• 9

• 16

• 8

Calculate the area of the circle if the radius is 5.

• 314

• 31.4

• 15.7

• 78.5

Calculate the circumference of the circle if the radius is 14.

• 43.96

• 87.92

• 615.44

• 28

Calculate the diameter of the circle if the circumference is 141.3

• 45

• 70.65

• 221.841

• 22.5

Calculate the radius of the circle if the circumference is 75.36

• 24

• 37.68

• 12

• 118.32

Nolan walked 10 laps around a fountain. The fountain had a 7 inch radius. How far did he walk?

• 43.96

• 21.98

• 439.6

• 219.8

Joe has a pool with the diameter of 15.7. What is the circumference?

• 7.85

• 47.7

• 24.649

• 49.298