Area and Circumference of Circles

A circular track with a diameter of 60 meters is shown. Shaleah walked around the track 4 times. Approximately how many meters did she walk?

• 377

• 2826

• 754

• 11,304

A large pizza has a diameter of 14 inches. A medium pizza has a diameter of 10 inches. How much larger is the area of the large pizza than the area of the medium pizza? Round your answer to the nearest hundredth of an inch. Use 3.14 for 𝜋.

• 12.56 in²

• 50.24 in²

• 75.36 in²

• 78.50 in²

• 153.86 in²

A circle has a diameter of 4.5 cm. A larger circle has a diameter of 24 cm. What is the approximate difference in the circumferences of the two circles?

• 19.5 cm

• 28.5 cm

• 61 cm

• 90 cm

The circumference of a circle is 188 meters. What is the approximate radius of the circle?

• 128 meters

• 94 meters

• 60 meters

• 30 meters

Match the following definitions to the terms:

• square units (units²)

• Area of a circle

• Units of area

• How much space a circle takes up

• Units of circumference

• The distance around a circle

• Circumference of a circle

• feet, cm, inches

Match the formulas to the measurements indicated.

• To find the circumference of a circle use:

• d/2

• To find the radius of the circle use:

• To find the diameter of a circle use:

• 2r

• To find the area of a circle use:

Mark has a circlular fire pit with a diameter of 5 feet. Build a brick border around the pit. Find the area of pit. Complete the statements about Mark's circular pit. To build the border, Mark needs a minimum of feet​ (a)   The area of the pit, to the nearest square foot is ​ (b)  

• 16

• 20 sq ft

• 7

• 8

• 9

• 15

• 8 sq ft

• 79 sq ft

• 314 sq ft

Match the following

• Arc Length

• Sector Area

• Area of a Circle

• circumference of a circle

Mark has a circlular fire pit with a diameter of 5 feet. * Build a brick border around the pit. * Find the area of pit. Complete the statements about Mark's circular pit. To build the border, Mark needs a minimum of feet​ (a)   The area of the pit, to the nearest square foot is ​ (b)  

• 16

• 20 sq ft

• 7

• 8

• 9

• 15

• 8 sq ft

• 79 sq ft

• 314 sq ft

Mark has a circlular fire pit with a diameter of 5 feet. Build a brick border around the pit. Find the area of pit. Complete the statements about Mark's circular pit. To build the border, Mark needs a minimum of feet​ (a)   The area of the pit, to the nearest square foot is ​ (b)  

• 16

• 20 sq ft

• 7

• 8

• 9

• 15

• 8 sq ft

• 79 sq ft

• 314 sq ft