Area and Circumference of a Circle

What is the area of a circle with a radius of 3?
Use A=πr²

• 9π

• 5π

• 91π

• 34π

Daniel wants to buy cookies for her friend. The
radius of a cookie is 5 inches. What is the cookie’s 
circumference?   Use C=2πr
Pi = 3.14

• 10 in

• 2.5 in

• 15.7 in

• 31.4 in 

Find the area of the circle.  Use Use A=πr² 
Pi = 3.14

• 43.96

• 153.86

• 87.82

• 307.72

Determine the radius of the penny

• 59.66 mm

• 9.5 mm

• 38 mm

• 119.32 mm

Brian made a tasty burger. The diameter of the
burger was 5 cm. What is the radius of the circle?

• 15.7 cm

• 10 cm

• 2.5 cm

• 31.4 cm

A DVD has a diameter of 15 millimeters. Which equation would help you determine the circumference?
use C=2πr

• c = 15π

• C = 2π15

• c = 15 ÷ π

• c = 15 π

What is the radius?

• 18

• 72

• 38

• 14

Which of the following choices is closest to the area of a circle? (d = 9 cm)

• 253.34 cm²

• 63.59 cm²

• 56.52 cm²

• 28.26 cm²

Find the circumference of the circle.

• 18.8 cm

• 113 cm

• 37.7 cm

• 452.2 cm

The distance around a circle.

• Area of a circle

• Circumference

• Volume

• Surface Area