Circumference and Area of Circles

Find the area of the circle

• 43.96

• 153.86

• 87.82

• 307.72

What is the area of this circle?

• 8322.13

• 1134.11

• 4536.46

• 1267.09

What is the area of this circle?

• 1385.44

• 2142.12

• 5541.77

• 1289.12

What is the area of this circle?

• 452.39

• 139.12

• 113.1

• 84.23

• 25.12 inches

• 12.56 inches

• 50.24 inches

• 31.4 inches

Match the following definitions to the terms:

• square units (units²)

• Units of area

• The distance around a circle

• Circumference of a circle

• How much space a circle takes up

• Units of circumference

• feet, cm, inches

• Area of a circle

Match the following

• Arc Length

• Area of a Circle

• Sector Area

• circumference of a circle

Match the formulas to the measurements indicated.

• To find the diameter of a circle use:

• To find the area of a circle use:

• d/2

• To find the radius of the circle use:

• 2r

• To find the circumference 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

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